P31 water liquid level pump sensor, 52 mm float switch, 500 mA

P31 liquid level sensor - float switch The P31 liquid level sensor is a reliable device that works on the principle of a reed switch. The module is versatile and is well suited for projects using microcontrollers, including Arduino, Raspberry Pi, ESP8266, and ESP32. The design is based on a float with a built-in magnet and a shaft containing a reed switch. The kit includes a nut with a gasket, which simplifies mounting and ensures sealing and durability of the whole assembly. How the float works The sensor continuously responds to changes in liquid level in the tank:

* When the float is in the lower position - closed circuit

* When the float is in the upper position - open circuit

Key technical specifications

* Maximum switching voltage: 100V DC

* Maximum switching current: 0.5A

* Mounting hole diameter: 7.5 mm

* Cable length: 34 cm

Example applications

* Monitoring water level in tanks and aquariums

* Protecting water pumps from dry running

* Automatic irrigation and hydroponic systems

* Liquid level control in industrial equipment and home appliances

* Home automation and smart home projects

Benefits

* Simple, trouble-free design based on a reliable reed switch

* Easy and quick installation thanks to the included nut and gasket

* Seamless integration with popular development platforms

* Immediate response to changes in the monitored liquid level

* Safe operating parameters ideal for low-voltage systems