1, Long working life, the endurance is more than 80,000.00 times. 2, With tacks to make sure door actuators will not blow out. Car central door locking system BA301Photoes: Item NumberEconomic Central locking System PhotoRemarkCF301B 2 master car door central locking system full setCF301AControl box 1pcs;2 wire Actuator 2 pcs;5 wire Actuator 2pcs;lron parts(5 holes)4 pcs;lron rod 4 pcs;screws ...