Sheriff car alarm: model descriptions and instructions

A car alarm is the same as 24/7 surveillance of your home.
This is a necessity, not a mere precaution. Depending on the manufacturer of the security equipment installed on your car, the degree of security of the vehicle also depends. When choosing, it is calculated how functional the security system is during operation, what additional options it has, and how useful they are. A Sheriff car alarm selected taking into account the characteristics of the car and possible risks is a guarantee of reliable protection.

Sheriff car alarm: model descriptions and instructions

Sheriff car alarms (the term “security systems” is of little use to them by modern standards) is a classic example of budget devices in the lower price segment, which are purchased solely on the principle “so that the doors open and the LED blinks, maybe they won’t get in”).
Frankly outdated models continue to be supplied under this brand: for example, the Sheriff APS-2500 alarm system still uses the Keeloq algorithm, which did not protect against code grabbers even ten years ago. In more “fresh” and complex systems, instead of real technical improvement, cheap marketing tricks are used, misleading the average buyer. As an example, the instructions for the “Sheriff ZX-1090 PRO” alarm system indicate the use of a certain DISARM DIALOG code in it. From the buyer's point of view, it is logical to assume that we are talking about dialog code, which is now considered to be maximally protected from intellectual hacking. In fact, the dialogue code (of dubious complexity) is used here only in the main key fob: for normal use of the entire set it has to be turned off (!), otherwise the additional key fob will not disarm the car.

It is impossible to talk about a full-fledged dialogue code at the level of StarLine systems (in the design of Sheriff key fobs there is obvious mimicry with the second generation StarLine systems) or Pandora.

Only the latest Sheriff models like the ZX-1095, which provide for working with a CAN bus and validating a transponder tag, can be called more or less meeting modern requirements. However, it is still equipped with an additional key fob without dialog code support, and to fully use both key fobs you have to switch to a primitive dynamic code. Thus, Sheriff cannot provide any significant competition in the middle price range, and in fact, the main sales of this brand fall on the most budget lines.

Possible problems and their solutions

If Sheriff alarms do not respond to commands sent from the key fob, you need to make sure that the antenna is installed correctly. It must be mounted at a sufficient distance from metal parts. An equally common problem is the false alarm of the siren. In this case, the sensitivity of the sensors is adjusted in accordance with the parameters specified in the instructions. If the doors do not lock when the security mode is turned on, check the condition of the wiring. Damaged cables are replaced.

• How to attach a key fob to a Sheriff alarm system
• Sheriff ZX 925 manual
• Sheriff ZX 970
• Alarm Sheriff APS95LCD B4 instructions

Peculiarities

How to connect an alarm with feedback and auto start to a car, how to set up the start, how to turn off the device and what is the best way to install it? First, let's look at the features of the system. The Sheriff car alarm is produced by Progressive Innovative Technology from the USA. As a result of numerous tests, the alarms of this brand have shown their effectiveness and functionality. Initially, the Sheriff car alarm was conceived as a budget anti-theft system.

• availability of two-way communication on almost all modern models;
• car alarm allows you to control the central locking remotely, locking the car doors;
• work with the satellite module;
• the car owner can set and disable the security system, while relying on the readings of the key fob;
• active and passive modes for installing a car on protection;
• if the Sheriff car alarm has an automatic start function, then the driver will be able to start and block the engine from a distance;
• The kit includes a shock controller with an alert function;
• the ability to recognize the owner of the vehicle at a distance when approaching the car;
• reliable protection against signal interception and scanning, which greatly increases the safety of the machine;
• the ability to set a security mode on the car even if the engine is running;
• the possibility of motion recognition, as well as wiretapping of the vehicle interior with further notification to the car owner (the author of the video is the Avtozvuk.ua channel - Avtozvuk Database).

These functions are typical for almost all signaling models.

A little about choosing an alarm manufacturer

The most popular and effective car security equipment today is considered to be a car alarm from the well-known manufacturer Sheriff. The system is connected by specialists; you can try to install it yourself; the instructions will help you with this. In addition, the millet kit is in operation and maintenance.

The quality of workmanship speaks for itself, but the alarm system of this level also differs in the following parameters:

• window/door locking function;
• the presence of a special satellite module;
• audio wiretapping of the cabin;
• possibility of instant blocking of the engine.

These parameters significantly increase the level of security of the car. The Sheriff car alarm will allow you to detect your car if it is stolen, as well as prevent this fact. The detailed instructions that come with the anti-theft system will tell you in detail about all its features and installation methods.

Types and models

Briefly about the most popular alarm models:

1. ZA-1095. It is characterized by the presence of four service channels, as well as additional protection against theft. There is an option to autostart the power unit.
2. APS-2500. Equipped with a two-level shock controller, it is possible to activate security when the engine is running. A distinctive feature is that this model has its own charger.
3. ZX-945. It is characterized by the presence of a dynamic signal coding system, as well as the Disarm Dialog option.
4. ZX-750. Large range of up to 2 km, of course, if we are talking about clear areas.
5. APS-2400. This model is characterized by the presence of one-way communication, but this does not make it less reliable and functional. The presence of a dynamic encryption code, which allows you to reliably protect the system from signal interception.
6. APS 35PRO. Complete “stuffing” - autostart, the ability to remotely control using a remote control, the presence of a two-channel receiver, a two-level shock controller, etc.
7. ZX-1055. This system belongs to the multifunctional category. A device with 5 communication channels, as well as advanced protection against vehicle theft. If the car is hacked, the engine will be blocked (video author - Andrey Tarakanov).

The alarm must be used correctly

Alarm units belonging to the Sheriff brand and equipped with auto start have a gearbox selection loop. It is easy to notice that the statement is not true for all devices of the family in question - sometimes software settings are used. In a car with a manual transmission, the owner must perform certain actions, and only then will autostart be allowed. All connections, moreover, are made according to the basic diagram, which is true for any car.

We hope everything is clear here.

How are Sheriff car alarm components connected?

Installation of the complex begins with choosing the location of the main control unit. As a rule, it is installed in a hidden place (for example, behind the glove compartment or under the heating or ventilation control unit). Using the screws included in the kit, fastening is carried out in the indicated place.

It is better to install the siren in the engine compartment so that moisture does not get on it, and it is also invisible.

The limit switch is mounted on a metal surface. It is important to remember that the limit mechanism rod moves approximately 6 mm when closing/opening the hood. It is better to place the shock sensor on a hard surface on the interior side. The LED element is usually placed on the front panel so that it is visible.

All connecting wires are connected from the ignition switch with a voltage of 12 V. When connecting, polarity must be observed. The instructions included with the equipment contain a detailed description of the procedure for connecting connecting cable lines (by color). Also included is a general wiring diagram for the Sheriff alarm system for the car.

The final stage of installation work is to stretch the antenna wire to its entire length and secure it with fastening ties.

Car alarm: connecting individual elements of the system

To connect all the components you will have to do a number of works:

• remove the wire from the ignition switch (which provides +12V voltage, directly when the ignition is turned on);
• stretch the limit switch cables directly from the hood and the siren device located in the cabin;
• make a high-quality diversion from the nearby “mass”.

When installing the equipment, we cut the original wiring responsible for controlling the electrical wiring for controlling the locks located on the doors. Basically, such elements are routed from the main unlocking switch to additional switches and then to the locks. For the full functioning of the security alarm, the element going to the main switch is connected to a green cable, and the element going to the electrical wires is connected to yellow.

The attached connection instructions provide even an amateur with all the necessary information about the places where the cables are connected and their unusual color camouflage. The main thing that we recommend paying special attention to is the protection of the wiring using high-quality insulating tape and corrugated tubes, as well as the quality of their fastening with cable ties.

The final stage is that the antenna is stretched to its maximum size and secured with ties in a place where it is almost impossible to damage it accidentally. It is strictly forbidden to wind the antenna cable around separate wires and harnesses that conduct current. This manual is suitable for all Sheriff models.

Possible faults

Despite the reliability of the Sheriff alarm system, its elements can fail.

The following problems are possible:

• sometimes the security system with feedback does not catch the signal from the key fob, or it is possible to catch it only the second, and sometimes even the third time;
• problems arise due to the high sensitivity of the sensors;
• In order for the key fob to work, you have to press the button hard;
• During arming, the windows are not blocked or the locks do not close completely; you have to close them yourself.

If problems with the alarm are identified immediately after purchasing and installing it on the car, you should return it to the seller or exchange it for a working one. In case of serious problems after prolonged use, it is better to contact a specialist.

Car control key fob

User manual

The operating instructions for the alarm contain recommendations that allow you to use the system correctly.

Activation and disarming of security

The security mode is activated by briefly pressing button 1 of the key fob. The protective function is disabled using the same key. To activate the option while the engine is running, you need to start the engine and hold down 1 button on the key fob. To disable the function, press the key briefly.

Programming a new key fob

The control panel programming process includes the following steps:

1. Removing the security mode and starting the engine.
2. Press the emergency button three times. The system will confirm action 1 with a beep.
3. Hold down button 1 of the first key fob. The key is released after a long beep appears.
4. Long press button 1 of the auxiliary communicator. Completion of key fob programming is accompanied by a sound notification.

Changing your personal code

Before programming, the anti-theft mode is deactivated using the service button. After this, perform the following actions:

• turn the engine on and off;
• enter the first digit of the password by the required number of presses of the service button;
• turn on the ignition;
• using the emergency button, enter the second digit of the code;
• turn off the ignition (the correct password entry is confirmed by a sound notification);
• Press the service button 3 times;
• press 1 key on the key fob (the system will notify you that a new code has been recorded with a sound signal);
• turn on the power to the transponder (after the sound signal appears, the device is deactivated).

The programming menu is exited after 10 seconds of inactivity.

Emergency disabling of security

According to the instructions for use, to emergency disable the protective mode, you need to open the driver's door with the key. After the siren sounds, you must start the engine. 10 seconds after turning on the ignition, press the service button.

How to enable autorun

To enable the alarm to automatically start at a certain frequency, you need to perform the following steps:

• press F twice;
• switch to cursor control mode;
• Press the F button again to confirm the selection of the desired indicator;
• use the door lock button to set the required interval.

The algorithm for enabling automatic start based on temperature differs by choosing a different indicator. The state of the security system does not matter.

Programming engine idle speed

Select the desired parameter as follows:

• The handbrake is moved to the “On” position;
• the ignition is turned on and the engine starts;
• within 20 seconds, press the service button 5 times (4th and 5th presses are accompanied by sound signals);
• the brake pedal is pressed and held (recording the value becomes possible after the parking lights flash);
• after a minute the brake pedal is released.

Engine lock

Remote engine blocking is carried out using the “Stop” button. Deactivation of the motor is accompanied by the disappearance of an indicator that looks like smoke. The function is configured in the cursor control menu.

Antihijack mode

The mode is activated when the engine is running, all types of cars are compatible with it. To begin, press buttons 1 and 2 of the key fob. They are held until 3 light signals appear. Over the next 20 seconds, the alarm will sound short beeps and periodically activate the interlock circuits. After 40 seconds, the alarm mode will turn on. If the engine is started unauthorized, the vehicle will not be able to continue moving and the doors will be locked.

Car alarm models

The most popular models are:

1. APS-2500 - comes with a shock controller and the ability to arm with the engine on and a separate charger.
2. ZX-750 - the model has a large range of action - up to 2 km in open areas.
3. ZA-1095 - the alarm is equipped with 4 service channels, a remote engine start function and improved theft protection.
4. ZX945 - dynamic signal protection against interception.
5. APS-2400 - one-way communication with the control unit, but this does not make this model less secure.
6. ZX-1055 - belongs to the multifunctional category with an increased number of communication channels and improved protection against theft. If hacked, the car's engine will be blocked.
7. APS-35PRO - includes all available functions from the manufacturer: two-channel communication, remote control, shock controller and others.

Complete sherriff alarm circuit diagram

At the final stage of installing the system, the antenna wire is stretched to its maximum length, which is secured with fastening ties in a place where it is difficult to accidentally damage it. Please note that in order to avoid spurious interference, it is strictly forbidden to wrap current-carrying harnesses and individual wires with the antenna cable. Our manual is suitable for the following models:

• Sheriff ZX-1095
• Sheriff ZX-945
• Sheriff ZX-935
• Sheriff ZX-755
• Sheriff APS 2400
• Sheriff APS-35PRO Platinum2
• Sheriff ZX-750
• Sheriff ZX-1070
• Sheriff ZX-1055
• Sheriff ZX-1060
• Sheriff APS-35PRO Platinum1
• Sheriff ZX-940
• Sheriff ZX-1090
• Sheriff ZX-725 ver.2
• Sheriff ZX-925 ver.2
• Sheriff ZX-910 ver.2
• Sheriff Lady ZX-800
• Sheriff ZX-710 ver.2
• Sheriff ZX-1050
• Sheriff ZX-600 ver.2
• Sheriff ZX-625
• Sheriff APS-35PRO
• Sheriff APS-25PRO
• Sheriff APS-2600
• Sheriff APS-2625
• Sheriff APS-2500
• Sheriff ZX-950
• Sheriff ZX-930
• Sheriff ZX-900v2
• Sheriff ZX-700
• Sheriff ZX-730
• Sheriff PRO-9250
• Sheriff APS-35PRO Silver
• Sheriff APS-2600 Ver.2
• Sheriff APS-2500 Ver.2
• ff APS-35PRO Ruby

Review of types of car alarms SHERIFF

SHERIFF car alarms are produced by the American company Audiovox, which deals with automotive electronics. The manufacturing company has achieved great success during its existence and has become a leader in the world market. Among other automotive electronics, SHERIFF anti-theft automotive equipment is quite well known, which has a lot of modifications and series.

Pictured is a Sheriff car alarm

Characteristics

SHERIFF car alarm has an affordable price and has a diverse number of functions, thanks to which this brand has gained great popularity among car owners. The basis of this security equipment is the dynamic Keelog code, which protects the alarm system from hacking through a built-in anti-scanning system. In addition, the security system has a number of advantages:

• Sound alarm of different tones;
• The presence of a sensitive shock sensor with an alert function;
• The ability to arm the car in active or passive mode;
• Ability to control central locking and door locks from a distance;
• Two-way dialogue communication;
• Availability of multifunctional key fobs.

Design and principle of operation

The alarm device includes a head unit, an antenna complex, control key fobs and some other elements, for example, an engine blocker. All Sheriff anti-theft systems have the following functions:

1. Vehicle condition monitoring. The system notifies the user using the key fob. The function works like this: if there is an attempt to steal or damage the car, the sensor transmits information to the head unit. The latter sends data to the key fob, on whose screen a message appears.
2. Remote control of the car. Depending on the alarm model, the system provides various options for remote engine starting. The user can send a command from the key fob, set the motor activation time, or set frequency indicators.
3. Security coding. The Sheriff car alarm operates using a separate channel. It is impossible to crack the security code using standard means.
4. Power window control. The function is implemented only in the presence of automatic closers.
5. Remote door opening. When the protective mode is turned off, the head unit sends a command to unlock the door locks and trunk.
6. Silent mode. When the anti-theft system is turned off and on, the system will not sound an alarm. By making the appropriate settings, the user can achieve automatic activation of the security mode when closing the doors.
7. Activation of alarm mode. At the same time, sound and light indications are triggered. The mode is designed to deter criminals.

Pros and cons of the manufacturer

According to user reviews, Sheriff anti-theft systems with feedback and remote start have the following positive qualities:

1. Easy to install and use. Anti-theft systems can be installed by yourself. It is enough for a car owner to have minimal knowledge about the structure of the on-board network.
2. Affordable price. Sheriff alarms are the most popular among buyers, due to their low cost and advanced functionality.
3. A large number of useful functions. The system will not only protect the car from theft, but will also allow you to control adjustable elements of the interior and body.

Contents of delivery

Operating and configuration instructions, as well as the user manual (we recommend reading carefully).

Key fob with two-way communication channel and TFT screen.

• Set of communication cables.
• Spare keychain.
• Siren (installed optionally).
• Main block.
• Hood or trunk button.
• Antenna module equipped with LED indicator.
• Service key "Valet"
• Dual zone shock sensor.

Tools and materials for DIY installation

Of course, the most important thing is the car and the Sheriff car alarm itself, as well as instructions for its installation and operation. In addition you will need:

• Multimeter and the ability to use it. An electronic device is best suited to easily measure conductivity.
• Additional electrical wires, as those included with the system are very short.
• Dark colored foam to protect the central unit.
• Double-sided tape, reliable electrical tape.
• Tools include a simple screwdriver and a socket wrench for removing doors, panels, and a knife for cutting wires.

Connecting an alarm to the central locking system with a negative and positive pulse

In this case, when a minus is applied to a pair of lock wires, they close or open. Finding such wires is relatively easy using a probe (lamp). You should alternately close the wiring that comes out of the car doors on the driver’s side. As soon as the right pair of wires is found (the door opens or closes), the problem can be considered solved.

In those cases where it was not possible to find the wires, you will have to “dig” into the central locking unit. You will need to find a special relay in it that is responsible for closing/opening the doors, and then solder the security system wiring into it.

Working with a lock controlled by a “plus” pulse is similar to the scheme described above. Only the required pair of wires in this case, as you yourself understand, will have a plus polarity. In other words, positive wires should come from the alarm.

The connection diagrams for the voiced types of central locking with a built-in relay will therefore be as follows:

• “Negative” pulse: NC (normally closed) contacts are not needed, NR (normally open) contacts are connected to the “minus”, common contacts go to the control wires.
• “Positive” impulse: open contacts are connected to positive, closed contacts are not used, common ones, as in the previous version, are connected to the found control wiring.

Immobilizer Sheriff T-34 ATF

This immobilizer has two radio tags that are read by an active transponder made in the form of a short-wave antenna on a ferrite core. The figure below shows the connection diagram of the immobilizer central unit:

The installation of the Sheriff T34 central unit should be as secretive as possible. The immobilizer has two built-in blocking relays. One of them can be used, for example, to break the power supply circuit of the fuel pump, the second - to turn off the power supply to the injection computer.

To increase the service life of the built-in relays, choose the lowest-current circuits possible: for example, by embedding a block in the crankshaft position sensor circuit, you will significantly reduce the wear of the relay contacts compared to using it in the ignition or fuel pump circuit.

The Sheriff immobilizer uses two analog inputs for activation: from the door switches and from the ignition switch. After the door is opened and the ignition is turned on, a search for marks occurs - if the answer is positive, the interlock circuits are closed.

Additional control circuits (shock sensor, volume sensor) are not provided, as well as notifying the user of unauthorized access - the immobilizer cannot be considered as a full-fledged replacement for the alarm system.

The ferrite antenna should be installed close to the driver's seat: under the steering column trim, at the bottom of the dashboard or in the center console. Professional installers recommend connecting the immobilizer as discreetly as possible; in this case, the control LED either does not connect or is embedded in the least visible place.

Sheriff ZX-1095 is one of the most modern models in the Sheriff line, equipped with two-way communication and an auto-start function. The car alarm uses a modern dialogue code; it is possible to connect to the CAN bus via an external module, including using the CAN bus to bypass the standard immobilizer.

The flexibility of this car alarm allows the use of various connection schemes. The main connections are made on the 20-pin connector of the Sheriff alarm central unit. Additional 6-pin connectors are the outputs of the built-in central locking and auto start control relays. The alarm uses an external shock sensor included in the kit. If necessary (for example, in a large minivan), when one shock sensor cannot be adequately configured to respond when the glass in the rear of the car breaks, you can connect an additional shock sensor to the corresponding connector.

The power connector for the auto-start alarm Sheriff ZX-1095 is connected in parallel to the corresponding contacts of the ignition switch. The connection diagram is based on the following pin operation:

• When autostart is activated, the IGN1, ACC and IGN3 circuits are turned on; if the lock has one ignition output, IGN3 is not connected. The shock sensor is also disabled.
• After a few seconds, the starter circuit is turned on, and ACC is turned off to reduce the load on the battery.
• After receiving a signal that the engine has started successfully, the starter is turned off and power to the accessories is restored. The shock sensor remains disabled. For autostart to work, additional control circuits are required, which are usually not used by car alarms without autostart:
• The handbrake input (gray wire) activates the program neutral mode: when the handbrake is tightened while the engine is running, the alarm closes the contacts of the built-in ignition duplication relay, and the engine continues to operate when the ignition key is removed from the lock. You can turn off the car only after closing the doors and arming the alarm, so it becomes impossible to leave it with the gear engaged.
• The engine control input (green/orange) must receive a signal in the form of pulses, the frequency of which is proportional to engine speed. The standard connection diagram for speed control involves the use of an analog tachometer or, in its absence, an injector control signal.
• The output to the immobilizer bypass (dark blue) is activated at the moment the ignition is turned on from the auto start relay, so that the vehicle's immobilizer receives a corresponding signal from the external bypass, in which one of the prescribed chips is installed.

Today there are many different models of car alarm systems. The most popular products are those developed and manufactured by the American company PIT (Progressive Innovative Technology). The equipment of this manufacturer has been sold on the Russian market for more than ten years. The most famous brands of this company are Challenger, Sheriff and EOS. You can purchase products from the above company not only in Russia, but also in Ukraine, as well as in other CIS countries. Wholesale and retail sale of protective equipment is possible. Two-way communication with clients allows us to improve security lines in accordance with consumer requests, using the latest technologies. Currently, car enthusiasts in Russia most often purchase Sheriff car alarms.