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Detect Nearby Objects Without Contact
The Non-Contact Liquid Level Switch is a button or switch input module designed for obstacle detection, touchless triggers, object counting, and simple automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Power supply: +5V.
Why you’ll love it
- Useful spec: 1~13mm
- Power range: +5V
- Current draw: 25μA
- Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics
- Common controller support: Works well with Arduino, ESP32, Raspberry Pi, and similar boards
- Project-ready sensing: obstacle detection, touchless triggers, object counting, and simple automation
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| Non-Contact Liquid Level Switch | button or switch input module | Current item |
| Float Switch Plastic Water Level Control | liquid level sensor | general-purpose sensing |
| Capacitive Proximity Sensor LJC18A3-H-Z / BY | proximity presence sensor module with digital output | model LJC18A3-H-Z |
| Float Switch Plastic Water Level Control Right Angle | liquid level sensor | pressure sensing |
What you can build
This sensor is a good fit for robot obstacle avoidance, touchless dispensers, automatic doors, object counters, parking aids, and level alarms.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard or jumper wires for quick setup and testing.
Recommended add-ons
Useful add-ons include breadboards, jumper wires, displays, enclosures, and logging modules, depending on how you plan to power, mount, and log the sensor.
Technical specifications
| Product | Non-Contact Liquid Level Switch |
|---|---|
| Detectable wall thickness | 1~13mm |
| Power supply | +5V |
| Working current | 25μA |
| Working temperature | -25~125℃ |
| Category | proximity presence sensors |
Wiring & usage notes
Check the pin labels on the Non-Contact Liquid Level Switch and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module.
What’s in the box
1 × Non-Contact Liquid Level Switch
Frequently Asked Questions
What does the Non-Contact Liquid Level Switch measure?
It is designed to measure liquid level or liquid presence.
Can I use it with Arduino, ESP32, or Raspberry Pi?
Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
What affects accuracy?
Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
Is it good for prototyping?
Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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