Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	5V / 12V DC
Control Mode	Automatic Pumping & Drainage
Probe Type	Conductive Water Level Sensor
Max Load Current	10A (via Relay)
Application Scenarios	Water Towers, Pools, Tanks, Aquariums
PCB Material	FR-4 Fiberglass
Indicator Lights	Power, High Level, Low Level Status LEDs
Connection Interface	Screw Terminal Blocks
Dimensions	65mm x 45mm x 18mm
Protection Features	Reverse Polarity Protection on Input

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for my rainwater tank

This module works exactly as described. I set it up to automatically fill my garden rainwater tank when the level gets low. The wiring was straightforward with the clear labels on the board. Very reliable so far.

Anonymous

Mar 23, 2026

Rating: 4/5

Solid build quality

The PCB looks well-made with good soldering points. The screw terminals hold the wires securely. I deducted one star because the probe wires included were a bit short for my deep well application, but I extended them easily.

Anonymous

Mar 14, 2026

Rating: 4/5

Good value, instructions could be better

The sensor itself is robust and the relay clicks loudly which confirms it's working. My only issue was the lack of a detailed manual in English, but I found a diagram online that helped. Works great for my aquarium sump.

Anonymous

Mar 10, 2026

Rating: 5/5

Compact and effective

Small footprint fits easily into my control box. The LED indicators are bright enough to see the status at a glance. I am using the 5V version with an Arduino project and it integrates seamlessly.

Anonymous

Mar 02, 2026

Rating: 5/5

Saved my basement from flooding

Installed this on my sump pump system. It triggers the pump immediately when water rises and shuts off perfectly when drained. The 12V option is great for safety in wet environments. Highly recommended.

Anonymous

Mar 01, 2026

Rating: 5/5

Easy DIY project

I'm not an electrician, but this was easy to install for my hydroponic setup. The automatic switching prevents the pump from running dry. It has been running 24/7 for two weeks without any issues.

5 FAQ

Q: Does this come with the metal probes included?

A: Yes, the package includes the circuit board and a set of three conductive probe wires. You will need to mount these probes at your desired high, low, and common levels inside your tank.

Q: What is the maximum wattage of the pump I can connect directly?

A: The onboard relay is rated for 10A. At 12V, this equals roughly 120W. For higher power pumps, we strongly recommend using this module to trigger an external contactor or a larger relay to avoid damaging the board.

Q: Can this module handle saltwater in a marine aquarium?

A: Yes, the conductive probes work with saltwater. However, please ensure the probes are made of corrosion-resistant material (like titanium or stainless steel) as standard copper wires may corrode over time in high-salinity environments.

Q: Can I use this to drain a tank instead of filling it?

A: Absolutely. By swapping the connections for the high and low-level probes, you can configure the module to activate the pump when the water is high and turn it off when the water is low, effectively automating drainage.

Q: Is there a delay feature to prevent rapid cycling if the water level fluctuates?

A: This specific model operates based on immediate conductivity detection without a built-in time delay. If your water surface is very turbulent, we suggest adding a small capacitor across the input or using a physical baffle around the probes to stabilize readings.

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