5pcs Adjustable Time Delay Relay Module NE555 DK555 DC 12V Timer Switch

The main chip: NE555Working voltage: DC12VColour: red+green+blueMaterial: PC, MetalSize: 6.8 x 2.1cmControlled AC 220V / 10A device. (maximum control equipment 2000W)Stream with relay protection.The relay time delay and power supply is connected. Specific as follows: for 12V power supply to the relay, relay not immediately and absorption, relay the output status to: normally open and public disconnect, normally closed and public conduction; Wait for delay 1-10s (adjustable), relay and absorption, at this point, the relay outputs status to: normally open and public conduction, normally closed and public disconnected; As long as the module power continuously, this state will remain.The delay time is adjustable, (0 ~ 10 seconds)Increasing the potentiometer can increase the delay timeThe capacitor C1 can increase delay timeWith input power lightA relay and indicator lightsThe delay time formula: T = 1.1 RC. For example: 100 uf capacitance resistance 100 k T = 1.1 * 100000 * 0.0001 = 11 secondsThe on-board equipment on the time delay, prevent excessive current when the car lighter burned on-board equipment.Need to have order to start the occasion, to prevent multiple devices at the same time starting current is too large burning appliances.Package Contents:5 x NE555 Delay Relay Shield Timer