... Power Motor Jam-Prevention,Dust-Tight,Waterproof Life:100000cycles Up central locking, car locking,car door lockingKit Features:1.2 Master 2 Slave2 ... ,jam-prevention,work stably and smoothly5.Parting line is sealed by ultrasonic welding completely,excellently dust-tight and waterproof6.Japan-imported ... temperature-40 to +80 degrees Celsius12Operating humidity≤75%Diagram: Car Central Locking System