Features:It is a timer relay module with highprecision, stable and reliable performance.Support 2 modes, mon mode(once) and cycle mode, and you can simply switch mode by adjusting the jumper.Connect 2wires of "Key" if you need module to work recurrently after power on.There are many voltage and time range for your choice, both "on" time and "off" time are adjustable.Widely used on timer operating equipment, machine repetitive test circuit,fish tank intermittent pump, etc.Specifications:Type: DC5V,0-30min or DC5V,0-24hr or DC12V,0-120min or DC12V,0-24hr or DC24V,0-15min or DC24V,0-30min (Optional)Quiescent Current: andlt 10mADynamic Current: 45mA 12V 90mA 5V 30mA 24VContact: 1 group NOandNCLoad Capacity: 10A(AC0-250V, DC0-30VSize: 70x20x18mm or 2.75x0.78x0.7"Time Accuracy: Max valuex0.001Mon. Mode: 1. The module Power-on, When triggered the relay is switched on, timer delay off. 2. When triggeredon the delay process, again triggered, it will immediately interrupt the delay.Cycle Mode: 1. The module Power-on, When triggered the relay is switched on, (T1) timer delay off. (T2) timer delay on. Such cycle. T1 and T2 are set by two adjustable resistors, respectively. 2. When triggered on the delay process, again triggered, it will immediately interrupt the delay.Package Includes:1 x Timer Relay Module.