OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Pausing With Sensor › Reply To: Pausing With Sensor June 19, 2023 at 9:02 am #76143 RayKeymaster 5V is the highest that can be tolerated on the sensor pin. Normally it should be 3.3V but the hardware has current limiting resistor and zener diode on the sensor pin to clamp the voltage to 3.3V.
