Mechanical Timer Switch: Large dial with clear scale, rotate the dial clockwise to adjust time; the driving method is quartz motor. Easy Operation: 24 hours timer, with manual switch, supports program timing (turn on/ off automatically according to the schedule) and permanent ON/ OFF. Built-in battery for reserve. Easy Installation: With mounting hole, the time switch is intended to be incorporated into equipment/ built-in control box, etc.. Compact size and light weight make installation easier. High Quality: 150 heat ABS casing, High quality and ; Supports IP53 conservation level, can put up with harsh environments. Wide Use: For street lights, ventilation, fountains, advertising hoarding, production equipment, broadcasting and television equipment and more. Transparent Dust Cover: Dustproof and waterproof, prolongs service life. Transparent design has no effect on viewing the dial. Programmable mechanical timer switch makes you life smarter and more convenient. IP53 rating extends the range of working environments. Easy to operate, easy to install. Note:Installation should only be carried out by a qualified electrician. Specifications: Voltage:AC 100-240V Frequency:50-60Hz Battery:1.2V 40mAh NI- Battery Contact Capacity:20A Power:2W Time Range:24H Minimum Interval:15min Setting Times: 15min/time, 96 times Reserve: 300H IP Rating: IP53 Item Size:163x113x45mm/6.42x4.45x1.77in Color:As Shown Material:ABS Package Contents: 1 * Timer Switch(Slightly chromatic aberration) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.