... etc Model No.: DL-TS004Description: Mechanical timer switch Brief introduction: DL-TS004 is a mechanical timer switch with 24 hours cycle design, minimum 15 ... the battery will be shorted consumedly. But if with this timer switch, we can prolonging its life, and save the power at ... work continuously, and waste the power, if we have this timer switch, we can turn on the heater at any time we ...