Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Model Number | M03/M04 |
| Detection Principle | Capacitive Induction |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switching (0/1) |
| Cable Length | 2.5 Meters |
| Working Temperature | -20°C to 85°C |
| Compatible Containers | Non-metallic (Plastic, Glass) |
| Indicator Type | Green LED Touch Switch |
| Current Consumption | < 20mA |
| Package Weight | 50 Grams |
Anonymous
Apr 14, 2026
Rating: 5/5
Reliable for hydroponics
Using this for my nutrient tank and it works flawlessly. No corrosion issues since it doesn't touch the liquid.
Anonymous
Feb 09, 2026
Rating: 5/5
Easy to integrate
Connected to ESP32 easily. The signal is stable and the green LED helps with debugging during setup.
Anonymous
Feb 03, 2026
Rating: 5/5
Great value
Cheap and effective solution for water level monitoring. Shipping was fast and packaging was secure.
Anonymous
Feb 02, 2026
Rating: 5/5
Perfect replacement
Replaced an old mechanical float switch with this. Much quieter and no moving parts to get stuck.
Anonymous
Jan 22, 2026
Rating: 4/5
Good but sensitive
Works well but needs tuning via the potentiometer for thick plastic containers. Once set, it is accurate.
Q: What microcontroller boards are compatible?
A: It is compatible with any 3.3V or 5V logic board including Arduino, ESP8266, and ESP32.
Q: Is the cable fully waterproof?
A: The sensor head is waterproof, but we recommend keeping the connection joints dry for longevity.
Q: Does this work with metal water tanks?
A: No, this sensor requires non-metallic containers such as plastic or glass to function correctly.
Q: Can it detect liquids other than water?
A: Yes, it can detect most non-corrosive liquids, though sensitivity may vary based on liquid density.
Q: How do I adjust the detection sensitivity?
A: There is a small potentiometer on the module board that allows you to fine-tune the sensitivity.
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