Auto lock screen to prevent misuse: If you don't operate it for 30 seconds per second, you can unlock it by long pressing the 'C/R' key. 28 groups of timing groups, the longest timing of 168 hours, can be customized at will High power relay, sufficient copper coil transformer No need to reset the time when power off, built-in large capacity rechargeable lithium battery, no need to replace the purchased battery Flame retardant PC material, the same inside and outside the safety table Specification: color white Voltage: 380V/50-60Hz Control output: 25A (three-phase direct output) Setting Times: 17ON/OFF (Day/Week) Setting time: 1 minute to 168 hours Travel time error: 1s / 24h Power failure memory: more than 180 days (built-in 1.2V rechargeable battery) Installation size: 128*117*65mm Mounting method: screw, guide rail (35mm) Weight: . 0.45kg Package included: 1 * Programmable Time Relay