2pcs NE555 Water Level Automatic Controller Liquid Sensor Switch Solenoid Valve

5V/12V
Optional Voltage: This NE555 water level automatic controller relay module is available in 5V and 12V versions. Please select the correct voltage option according to your power supply and control system requirements before purchase
Automatic Liquid Level Control: Designed for water level detection and automatic relay switching, this module can work with A/B/C sensor terminals to detect liquid level changes and control connected equipment based on the detected status
Relay Output Interface: The onboard relay provides NO, COM, and NC output terminals, allowing normally open or normally closed wiring for compatible solenoid valves, small pumps, motors, and other electronic control loads
Easy Wiring Terminal Design: Equipped with screw terminals for VIN power input, A/B/C sensor connection, and relay output connection. The board also includes a power indicator and output indicator for convenient operating status observation
Wide Application Range: Suitable for water tank level control, liquid level sensing, pump start/stop control, solenoid valve switching, water supply automation, laboratory electronics, and DIY electronic control projects