Optomax Digital Liquid Level Sensor
Optical point-level switch that outputs a digital signal when submerged; no moving parts or oxidizing contacts. Suitable for water detection, tank fill/empty sensing, and damp-environment monitoring.
Pinout
- Blue/Black wire
Ground lead. Adafruit product page says to connect the Blue/Black wire to ground.
Type · groundVoltage · 0V / ground - Red wire
Supply lead. Adafruit product page says to connect the Red wire to 4.5-15.4VDC.
Type · powerVoltage · 4.5-15.4VDC - Output wire
Push-pull logic-level liquid-detect output. Adafruit states dry output is the same as the red wire and wet output is 0V; output can sink/source up to 100mA.
Type · signalVoltage · 0V when wet; same as red supply when dry; supply range 4.5-15.4VDC
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| Blue/Black wire |
Start wiring
Analog · UART · 3.3 – 5 V · Gravity
Verify supply voltage and logic levels before powering up.
Module pins: Red wire, Blue/Black wire, Output wire. Schematik maps them to your board in the app.
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