Features This product has a function of extinguishing the screen (the power is reduced when the product is not used) Suitable for elevators, packaging industry, conveying machinery, industrial production lines, automotive industry, etc. Built-in high-capacity lithium battery for long lasting life and durability Up to 20 sets of switching time can be set in one dayLow power consumption, high stability, switchable power saving mode. Mini size, made of high quality ABS material Specification:Item Type: Electronic Timer Switch Model: KG316T-II Applicable Voltage: 220VAC (176-250VAC) Current: 30A Power Consumption: ≤ 4VA Material: ABS plastic Size: Approx. 88 x 54 x 42mm / 3.5 x 2.1 x 1.7in Built-in Battery Model: CR2032(button battery); voltage 3V; capacity: 210mA Package List:1 x Electronic Timer Switch  Package List 1 x Electronic Timer Switch