Feature: 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. Specification: Item Type: Time Control Switch Material: ABS Working Voltage: AC220V Battery 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 day Relative Humidity: <95% Ambient Temperature: -20℃~70℃. Package List: 1 x Time Control Switch Note: 1. To prevent the contact from heating under strong current, be sure to tighten the screw of the terminal when the wire is hot. 2. If the power supply is 220VAC, do not connect to 380VAC. 3. The green even number on the panel is the power indicator, and the red is the output indicator. 4. The set time cannot be set crosswise, but should be set in the order of time.