12V Anti-Theft Car Immobilizer Keypad with Encrypted Communication

Immobilizer with Password Keypad for 12 V Vehicles What it does This electronic immobilizer prevents unauthorized starting by interrupting the vehicle fuel pump wire or ignition wire through a high-current relay. It works with all 12 V vehicles, including fuel and electric vehicles, and is compatible with both key blade and push-button ignition systems. Key benefits - Reliable engine disable: Controls the actual fuel pump or ignition wiring via a high-current relay rather than only supplying a 12 V output, providing stronger and more reliable immobilization. - Wide compatibility: Designed for use in any 12 V vehicle and adaptable to original push-button switch wiring for flexible installation. - Improved durability and stability: Electronic relay switching provides longer life and more consistent performance than a simple mechanical switch. - Secure and tamper-resistant: Password and encrypted communication increase theft protection; the password is stored on the receiver so replacing the keypad alone will not disable the system. - Simple installation and operation: Fits existing wiring for fuel pump, ignition, or the trigger cable of an original push-button switch, making integration straightforward. Main features and specifications - Operating voltage: 9 to 16 V DC. - Controls: Switches fuel pump wire, ignition wire, or original push-button trigger wire via a high-current relay. - Security: Data encryption and bidirectional single-wire communication for higher confidentiality. Password stored on receiver for added protection. - Default password: *5341 (manufacturer default; must be changed after installation). - User feedback: Keypad emits beeps for each key press and for success or error states; LED indicates armed/disarmed status. - Anti-tamper lockout: If the password is entered incorrectly three consecutive times, the keypad locks for three minutes and signals with periodic beeps and LED flashing. - Replacement convenience: Keypad can be replaced without changing the stored password on the receiver, allowing easy maintenance while preserving security. Basic operation at a glance - Disarm: Enter star, then your password, then star. The keypad beeps twice when correct. Within 60 seconds turn ACC to ON to deactivate the system and extinguish the LED. - Active arming: After ACC has been OFF for 60 seconds the system automatically arms and the LED flashes. - Passive arming: With ACC OFF, press and hold star for 2 seconds; the keypad will indicate arming and the LED will flash. - Change password: While armed, enter the current password with surrounding star keys, then switch ACC ON and enter the new password twice within one minute to confirm. The keypad will beep to confirm success. - Incorrect entry handling: On a wrong password the keypad beeps three times. After three consecutive wrong attempts the keypad locks for three minutes and signals the lockout status. Typical use scenarios - City parking: Arm the immobilizer when leaving the vehicle parked in public areas to prevent hot-wiring or unauthorized start attempts. - Valet or service situations: Temporarily disable vehicle starting by arming the system when handing the vehicle to a service center or valet and disarm only when needed. - Vehicle transport or storage: Use the device to ensure the vehicle cannot be started during towing, shipping, or long-term storage. Why choose this unit This immobilizer offers practical, vehicle-level protection by interrupting the actual fuel or ignition circuit with a high-current relay, combined with encrypted password storage for stronger anti-theft resistance. It is compatible with a broad range of 12 V vehicles and supports both key and push-button ignitions while allowing straightforward maintenance and keypad replacement without compromising the stored password. This description reflects the product functions, compatibility, and operating procedures as provided and should help determine whether the device meets your vehicle security needs.