XH-M203 12v automatic water level controller COM33 ,R24

XH-M203 Full Automatic Water Level Controller Pump Switch Module AC/DC 12V Relay.

When the water level is higher than the upper line, it will stop to add water automatically, no need for manual management, full automatic. Easy installation, and simple to operate. Widely used in water conservancy project, water tower, water bucket, water tank, water pond, etc