NE555 Timer Module, 12V 10A Delay Relay, 0–10s Delay

NE555 Timer Module with 12V Relay

This timer module with a relay, based on the reliable NE555 chip, begins counting down the set time once a 12V DC power supply is connected; it then activates the relay and remains in this state until the power is cut off.

The delay time is adjustable from 0 to 10 seconds using the built-in potentiometer. The circuit is ideal for automation projects and for use with popular programmable platforms such as Arduino, Raspberry Pi, ESP32, and ESP8266.

Key Technical Features

The device features clear LED indicators and screw terminals that make it easy to connect wires without soldering.

• IC: NE555
• Circuit supply voltage: 12V DC
• Relay: 10A 250VAC / 30VDC
• Delay adjustment range: 0–10 s
• Status indicators: an LED indicating module operation and a second LED indicating relay operation

Example Applications

• Delayed power-on of end devices after the mains power is turned on.
• Protection of circuits against inrush currents generated during power supply startup.
• Automatic time-controlled operation of lighting or ventilation.
• Delayed power-on circuits in home automation systems.
• Building electronic projects using modules for Arduino, Raspberry Pi, ESP32, or ESP8266.

Benefits

• Smooth adjustment—the delay time can be easily adjusted within a range of 0 to 10 seconds.
• Clear indication—separate LEDs clearly indicate power presence and the relay’s on/off status.
• Simple installation—ARK-type screw terminals allow for quick and secure wire connections.
• High current capacity—the relay can switch currents up to 10 A at 250 V AC or 30 V DC.
• Reliable circuit—the use of the proven NE555 integrated circuit ensures stable timing.