It is a Relay Module/Multifunction Controller/Digital Display Time Relay Module, Power supply: DC 24V, Maximum operating current: 10A, Maximum power: 1500W, Timing range:0 ~ 999S/0 ~ 999M/0 ~ 999H, Product features: timer / delay / cycle / covering 18 kinds of functions. Can be used for timing, delay, cycle timing, intermittent timing and other occasions.