... ,single chip. 2,The equipment is debugging-free type 3,anti theft device alarm Transmitter Technical Instruction 1. Main technical parameters: Input DC ... frequency), T04 receiver does not need adjustment. 4. Sound/light alarm device If JP2 setting is 1&2 (factory setting), sound and ... and last for 2 seconds, then the sound alarm stops, but light alarm continues to twinkle for 3 seconds. 5. Installation ...