Function Introduction: The YW01 liquid level sensor is a simple and easy-to-use resistive liquid level identification and detection sensor. It determines the water level by measuring the liquid level through a series of exposed parallel wire traces. It easily converts the liquid level signal to an analog signal, and the output analog value can be directly read by the microcontroller's AD function module. Operating Voltage: DC5.0V Detection Range: 0-90mm Detection Accuracy: 1cm Output Signal: 1 channel analog voltage output 0V~1.0V corresponding to liquid level 0%~100% (non-linear relationship). 1 channel digital output outputs high and low levels. Demonstration Effect: A demonstration video can be viewed. Applications: Microcontroller-controlled water depth detection, liquid level detection, water level alarm, etc. Dimensions: 100x20x1.6mm Wiring: Sensor: VCC: VCC GND: GND AO:AIN0 DO:P20 Color: Green Material: PCB Package Contents: 1 * YW01 liquid level sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.