Description
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 reliable performance.Widely used on timer operating equipment, machine repetitive test circuit, fish tank intermittent pump, etc.There are many voltage and time range for your choice, both “on” time and “off” time are adjustable.Support 2 modes, mon mode(once) and cycle mode, and you can simply switch mode by adjusting the jumper