Features It is great to control the hub or repeated on/off for device and product burn-in testing. Widely used in timer operating equipment, machine repeat test circuits, intermittent fish tank pumps, etc. Supports start/stop function, the module switches to an infinite cycle mode after switching on, the relay works according to the set running and stop time. There is a large time range that you can set, both the "Run" time and the "Stop" time are adjustable. It is a time relay module with high precision, stable and reliable performance. Specifications: Voltage: AC100V~250V. Power: <1.0W Output: active output, output voltage equal to input voltage. Max. Output current: <10 A. Input: passive switch input, green LED lights up after power on, red LED lights up after stop. Time range: 0.5 sec. Up to 1000 minutes. Time accuracy: max. Range value x 0.001. Input (start button): passive switch input, green LED lights up after power on, red LED lights up after stop Start input is not required. Connect these 2 clamps and then the board will cycle endlessly after switching on. Size: 88 x 38 x 22 mm/3.46 x 1.49 x 0.86 inches. Mounting hole spacing: 83 x 33 mm/3.26 x 1.3 inches. Mounting Hole Diameter: 3.2mm/0.12" Note: 1. Use a start button whose current is more than 0.1 A. 2. Electric shock alarm, start button cable has high voltage, please be careful! Package includes: 1 x Time Relay Module Package List