12V LED Automation Delay Timer Control Switch Relay Module with Case

Features:
New upgrades to simplify, meeting the users' needs.
Increase the power supply anti-reverse function.
The use of opto isolated input and output, enhanced anti-jamming capability and consumption.
The last setting parameters can be memorized after power off.
Signal terminal voltage signal can be maintained for a long time.
To ensure stability, industrial grade PCB board.
Notice:
Relay output is passive contact without charge output, and it control the on and off of the line.
Working modes selection: after power on, long press K1 for 2s, later into the selection of modes: P1~4; K2 to enter the mode.
P-1: Monostable trigger delay, a signal to trigger relay, time is up, the relay disconnect;
P-2: A signal trigger and countdown begins, T1 seconds after, the relay open T2 seconds, then close;
P-3: Open T1 seconds, disconnect T2 seconds, infinite loop. Users can set the relay time T1 and T2;
P-4: The relay opens when a signal triggers, when the trigger signal disappears, digital countdown begins, and the relay closes when the time is up.