Handy countdown timer module with a multitude of uses. Will time from 0.1 secs to 10 seconds, easily adjusted with multiturn potentiometer.
Module Properties: NE555 chip Input voltage: DC 12V Dimension: 77mm (L) x 23mm (W) x 18mm (H) mm Control voltage: AC 0~250V / max. 10A, DC 0~30V / max. 10A Max. loading: 2200W The output can be connected to AC 250V 10A resistive or DC 30V 10A load.
There is an onboard "power" LED and a "output status" LED
PCB may be red or blue Power input to board is labelled VCC (+12v) and GND terminals relay contact outputs (clean contact) CB - com = normally closed contacts, CK - com = normally open contacts. apply power and once timed out power is applied to relay, relay toggles recycle power to reset