WRL-220 is kind of wireless relay switch which supports two DI (digital input) and two DO (digital output) interfaces. It supports bi-directional communication that allows you to receive or transmit signal with 3rd-party device by itself or interact with other UIS wireless devices.

Function Specification:
- ZigBee Pro (2.4GHz) RF interface 
- LED indicator 
- DC 12V adapter
- Max loading 10A/12 VDC