Features: - There is a wide time range that you can set, both "RUN" time and "STOP" time are adjustable. - Support start/stop function, module enter an infinite cycle mode after power on, relay works according to the setting run and stop time. Specifications: Voltage: AC100V~250V Power: <1.0W Output: Active output, output voltage equals to input voltage. . Output Current: <10A Input: Passive switch input, green led lights up after turn on, red led lights up after stop Time Range: 0.5sec. to 1000min. Time Accuracy: . range value*0.001 Input(start button): Passive switch input, green led lights up after turn on, red led lights up after stop Start input is not necessary. Connect these 2 terminals and then the board will cycle infinitely after power on. Size: 88 x 38 x 22mm / 3.46 x 1.49 x 0.86" Mounting Hole Spacing: 83 x 33mm / 3.26 x 1.3" Mounting Hole Diameter: 3.2mm / 0.12" Note: 1, Use a start button whose current is more than 0.1A 2, Electric Shock Alert, start button wire has high voltage, be careful please! Package Includes: 1 x Timer Relay Module