Industrial Capacitive Liquid Level Sensor for High-Viscosity Liquids

Capacitive point-level sensor for high-viscosity, low-corrosive liquids (glue, lubricating oil, ink); 12–24 V, NPN+PNP dual output, IP65, PEEK/316SS housing. Adjustable sensitivity knob; avoid use if dried residue cannot be removed from the probe.

Logical pinout · physical placement not verified

Brown lead
Positive supply lead; product page wiring instructions state Brown-positive.
Type · PowerVoltage · 12-24V power supply per DFRobot product page
Blue lead
Negative supply lead; product page wiring instructions state blue-negative.
Type · GroundVoltage · 0V / supply negative
Black lead
NPN switch output lead; product page wiring instructions state black-NPN and output signal is NPN+PNP dual output.
Type · GPIOVoltage · NPN output, max 100mA; supply 12-24V per DFRobot product page
White lead
PNP switch output lead; product page wiring instructions state white-PNP and output signal is NPN+PNP dual output.
Type · GPIOVoltage · PNP output, max 100mA; supply 12-24V per DFRobot product page

Pin	Type	Function	Voltage
Brown lead	Power	Positive supply lead; product page wiring instructions state Brown-positive.	12-24V power supply per DFRobot product page
Blue lead	Ground	Negative supply lead; product page wiring instructions state blue-negative.	0V / supply negative
Black lead	GPIO	NPN switch output lead; product page wiring instructions state black-NPN and output signal is NPN+PNP dual output.	NPN output, max 100mA; supply 12-24V per DFRobot product page
White lead	GPIO	PNP switch output lead; product page wiring instructions state white-PNP and output signal is NPN+PNP dual output.	PNP output, max 100mA; supply 12-24V per DFRobot product page

Logical pinout · physical placement not verified

Pin details

4 connections

Brown lead
Positive supply lead; product page wiring instructions state Brown-positive.
PowerVoltage · 12-24V power supply per DFRobot product page
Blue lead
Negative supply lead; product page wiring instructions state blue-negative.
GroundVoltage · 0V / supply negative
Black lead
NPN switch output lead; product page wiring instructions state black-NPN and output signal is NPN+PNP dual output.
GPIOVoltage · NPN output, max 100mA; supply 12-24V per DFRobot product page
White lead
PNP switch output lead; product page wiring instructions state white-PNP and output signal is NPN+PNP dual output.
GPIOVoltage · PNP output, max 100mA; supply 12-24V per DFRobot product page

Start wiring

Analog · UART · 3.3 – 5 V · Gravity

Verify supply voltage and logic levels before powering up.

Module pins: Brown lead, Blue lead. Schematik maps them to your board in the app.

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