Connect 2 wires of "Key" if you need module to work recurrently after power on.; It is a timer relay module with high precision, stable and performance.; Timer switch module Supports 2 modes, mon mode(once) and cycle mode, and you can simply switch mode by adjusting the jumper.; Timer module is widely used on timer operating equipment, machine repetitive test circuit, fish intermittent pump, etc.; There are many voltage and time range for your choice, both "on" time and "off" time are adjustable.
What's in the box
1 x Timers
