The LB 405 Universal Car Keyless Entry System PCB is the core control module designed to upgrade or replace the central locking mainboard in 12V vehicles. This compact and robust circuit board features a high-sensitivity RF receiver and onboard power relays capable of driving both electric and pneumatic central locking actuators. It is universally compatible with most vehicle makes and models, offering essential security and convenience features such as remote locking/unlocking, trunk release, and car finder functionality.
The board includes a dedicated "Learning Button" for easy programming of new remote fobs and a jumper selector to toggle between electric (0.5s) and pneumatic (3.5s) lock timings. Ideal for repairing damaged keyless entry systems or for custom automotive electronics projects.
Features:
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Universal Compatibility: Works with any 12V vehicle system.
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Dual Lock Mode: Configurable Jumper for Electric (0.5s) or Pneumatic (3.5s) central locking.
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Remote Functions: Supports Lock, Unlock, Trunk Release (-), and Car Finder.
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Visual Feedback: Output for turn signal/indicator lights (flashes on lock/unlock).
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Security: Active LED status indicator output and siren output support.
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Easy Pairing: Onboard tactile "Learning Button" to program up to 4 remote remotes.
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High-Power Relays: Durable onboard relays for direct actuator control.
Specifications:
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Model: LB-405 (PCB Module)
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Operating Voltage: 12V DC ± 2V
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Frequency: 433.92 MHz (Universal RF)
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Static Current: <15mA
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Indicator Current: 20mA
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Lock Output: Electronic / Pneumatic (Selectable)
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Outputs: Central Lock (x2), Trunk Release, Siren, Windows Roll-up (optional/model dependent).