JK02 delay relay module, using NE555 as the time base. Function: Connect the power supply to the control panel immediately after the arrival of the set time to disconnect the load. Change the delay time length by adjustable resistance. Delay time 0-60 seconds adjustable. The relay is normally open and normally closed, connected to the normally closed end (NC) for the delay connected, then the normally open (NO) for the delay off. The control voltage is available in both 5V and 12V. Circuit wiring in line with safety requirements, the load capacity of 10A 250V AC or 10A 30V DC. With the status indicator, red LED light means that the module has access to power, green LED light that relay is in the state of the pull. Please pay attention to the use of voltage, module 5V specification voltage of 4.5V-5.5V. 12V specifications for the 11V-13V. Quiescent current 5mA or less, after the maximum current 40mA (12V version) or 80mA (5V version). PCB size: 75mm * 20mm, with mounting holes.