Have a Dash Cam? Purchase the KDR-1 (¥8000+tax) along with a 640H system. While not required, we also recommend the MMF-2 radar sensor and SB-33 sensor splitter with Dash Cam setups because the MMF-2 will temporarily activate Dash Cam recording when people come too closely to your car, even if they never touch your car.
Compatible vehicles must have "factory keyless" installed (not a 3rd party keyless kit), and vehicle hazard lights must flash after pressing the factory remote's LOCK or UNLOCK buttons. (See #5 below for a partial exception to this rule.)
Not compatible if vehicle hazard lights flash when the driver's door is unlocked with the metal key. (See #5 below for partial exception.)
Incompatible with vehicles that cannot detect a 12v signal from the door lock motors (e.g., most vacuum-type door locks)
Don't have Factory Keyless? Simply purchase an optional TR365 or TR535S kit along with your 640H system. Please note, however, that doing so does NOT add keyless entry to your car. If you want door lock control using a TR365 or TR535S kit, you must purchase an optional 318-16R door lock interface.
Some Mitsubishi and Suzuki cars have non-standard hazard lamp flashing associated with keyless door locking and unlocking. This is a problem because 640H systems read hazard lamp flashes. The solution is to purchase our KDS-3 interface, which provides the necessary hazard lamp flashing signals to the 640H. The KDS-3 will work on any car that has non-standard vehicle hazard flashing.
If you flash the Hazard lights continually, the 640H cannot Arm/Disarm when you Lock/Unlock because the 640H waits to see when the Hazard flashing stops before changing its Armed state.
On vehicles equipped with a Remote Starter that has a "Vehicle AUTO LIGHT Disable" feature, you must DISARM the 640H BEFORE you shut-off the engine via the Remote Starter.
If you purchased a 640H product in the past, its firmware may not support newer security features like Relay Attack Prevention or the KDR-1 interface for Dash Cams. We offer a firmware upgrade service for a nominal fee. Please email us for details.
Some cars experience large voltage drops less than 5V during cranking. Please purchase our UPS-47 for those vehicles.
640HB includes a siren with internal backup battery that lasts about 3 years. Even after the battery dies, the siren will continue to operate. That battery is glued inside and is not replaceable. Backup sirens also come with 2 keys to allow you to kill the siren sound easily. We cannot issue replacement keys, so please keep 1 key in a safe location.
Why choose the 640H instead of the 540H? Quite simply, not all vehicles are compatible with our 540H. The 640H is best for older cars incompatible with the 540H. The 640H takes longer to install though than the 540H because the 640H requires manual (analog) connections to door pin switches, hazard lights, ignition, etc. The 540H is much easier to install because it is a digital system that communicates directly with the vehicles ECU to determine if doors are opened, ignition switches are on, etc.