1、Better Control: Comes with 16 sets of programmable on and off, this timer controller enables better control on appliances. 2、Reliable Works: Using high power output relay, the time control switch with good accuracy ensures a small error within 1s. 3、Simple Viewing: Thanks to the digital display, the clear viewing on data will bring more convenience to your operation. 4、Easy Operation: Enhanced anti interference ability with keyboard lock and premium ABS material makes the using much easier. 5、Quick to Install: Designed to have a light weight and a compact size, the simple installation can be quickly completed. 1 x Time Control Switch Item Type: Time Control SwitchMaterial: ABSWorking Voltage: AC220VBattery Information: 1 x 1.5V AA dry battery 800mAh (delivered with built in battery). Load: Resistive 25A. Programmable Group Number: 16 on 16 off. Timing Error: ≤1 second per dayRelative Humidity: <95%Ambient Temperature: -20℃~70℃