XKC-Y25 NPN Non-Contact Liquid Level Sensor

The XKC-Y25 non-contact liquid level sensor is a smart electronic sensor that detects the presence of water or other liquids through the wall of a tank or pipe — without any part touching the liquid itself. With its NPN switching output, it sends a clean on/off signal that connects easily to a controller, relay, pump circuit, or microcontroller. It's a practical choice for home water tanks, farm reservoirs, hydroponic setups, and small automation projects where reliable level detection matters.

Key features

• Non-contact detection — senses liquid through the container wall, so the sensor stays clean and dry.
• NPN output for simple wiring into relays, pumps, and controllers.
• No moving parts and no probe inside the liquid, which means less wear and easy maintenance.
• Compact body that mounts to the outside of plastic tanks and pipes.
• Suitable for clean water and many common liquids in low-pressure setups.

Typical uses

• Automatic water-tank level control to start or stop a pump.
• Overflow and dry-run protection for irrigation and pumping systems.
• Hydroponic and greenhouse reservoirs.
• DIY automation and Arduino-style project builds.

How to choose / tips

Confirm the output type you need — this model gives an NPN signal, so match it to your controller's input. Mount it on a clean, flat section of the tank wall and avoid very thick or metal walls for best response. For thicker tanks, position it where the wall is thinnest.

Why tna W rna

At tna W rna we source reliable parts, ship fast across Egypt, and offer cash on delivery — so you can buy with confidence and get your irrigation or water project running.