This fixture controller utilizes intelligent relay control software that reduces wear to extend relay life. When a sensor is installed (sensor sold separately), it will automatically read light levels and determine how to best illuminate your space. It’s simple and intuitive. Using the EarthConnect app, nodes can be commissioned without the need for a gateway or internet access. Factory installed with order of EarthTronics LED Low Bay products. For use with EarthConnect Bluetooth® integrated fixture with microwave sensor.