NE555 Delay Timer Monostable Switch Relay Module 12V Electrical Delay Protection

Cara Kerja: 
Saat diberi tegangan, relay belum bekerja dan ada delay untuk relay menyala (waktu ini yang bisa diatur via VR). Relay akan mati saat tegangan dilepas / diputus

Spesification:
1. Size: 6.8CM*2.1CM
2. Main chip: NE555
3. The working voltage: DC 12 V

Features:
1. When the power is turned on, the relay pulls in with a delay (this module only has a delay pull function, and does not have a delay disconnect function, unless the power is turned off). Specifically: After power-on, the relay will not immediately absorb and the state of the relay output terminal is: normally open and public disconnect, normally closed and public conduct; after the delay is 1-10s (the delay is adjustable), The relay is in and at this time, the state of the relay output terminal is: normally open and public conduction, normally closed and public disconnection; as long as the module is continuously powered, this state (relay suction state) will always be maintained. Test phenomenon: After power-on, the red power indicator light is on. After a delay of 1-10S, the relay is activated, and a "click" sound will be heard, and the blue relay and indicator light is on.
2. The delay time is adjustable, (0～10 seconds)
3. The delay time can be increased by increasing the potentiometer.
4. The delay time can be increased by increasing the capacitor C1.
5. With input power indicator light
6. With relay pull-in indication lamp
7. It can control AC 220V/10A lower equipment. (Control equipment 2000W)
8. With relay freewheeling protection.
9. Delay time formula: T=1.1RC. For example: capacitance 100uf resistance 100K T=1.1*100000*0.0001=11 seconds