Application of Timer TH-191: DIN standard size, DIN 35mm standard rail mourting Electronic timer for 24 hours Application of Timer TH-191:DIN standard size, DIN 35mm standard rail mourtingElectronic timer for 24 hoursThe min. time is 15mins, easy to operate24-hour clock display, led back lights, light up the keyboardInternal displayHigh-precision, high inoperation reliability with day light ...