Gravity: Photoelectric High Accuracy Liquid Level Sensor for Arduino Shipping:1 day The radio uses open source

The radio uses open source [SiK firmware](https://github

Expansion - Up to 8 modules on Serial or I2C bus

The Arduino shield form-factor mates directly with development boards that have the Arduino Uno R3 standard footprint

Each radio 'Wing comes with some header

This is where you can supply power to the SX1509

Gravity: Photoelectric High Accuracy Liquid Level Sensor for Arduino Shipping:1 day The radio uses open sourceThis is a photoelectric water liquid level sensor that is operated using optical principles. The advantages of this photoelectric water liquid level sensor are good sensitivity and no need for mechanical parts meaning less calibration! The corrosion resistant probe is easily mounted and can handle high temperature and high pressure. The arduino liquid sensor is equipped with an interface adapter for compatibility with the DFRobot "Gravity" interface.