SPECIAL CHARACTER: This system can drive the actuators directly. No need central lock automation control box. Best choice for car owner who has no automatic central lock system. MAIN FUNCTIONS AND FEATURES: 1.arm/disarm, lock/unlock remotely 2.automatically re-arm (optional) 3.stop siren temporarily 4.two-stage shock sensing and alert 5.car locating in park lot /emergency call 6.emergency override ( disarm when transmitter is missing) 7.power-cut-off memory protection 8.shock sensor pass 9.valet mode 10.central lock automation 11.lock on footbrake (optional) 12.mute alarm option 13.solenoid lock /vacuum lock option COMPONENT PARTS: 1. transmitter ( 2pcs). 2. control box 3. siren 4. shock sensor 5. engine-cut-off relay. 6. led light 7. wires 8. 4pcs of central lock actuators ( for C803_H)