LEDSmart-BLE2-Relay-250W-DIM (Opple Item Code: 821017003600) Smart Relay with DIM function for use in the OPPLE Smart Lighting System. Simple wireless control, including TRIAC dimming to dim any type/brand of luminaire. Compatible with OPPLE BLE2 Smart Sensors & OPPLE BLE2 Smart Switch. Including built-in energy meter, to read out in the app or web user interface. Complete wireless communication via future-proof, standardized Bluetooth® Low Energy (BLE) SIG Mesh protocol. Model: Signal converter; Operating method: RF; Width: 41.2mm; Degree of protection (IP): IP20; Height: 28mm; Depth: 88mm; Operation by Bluetooth: Yes;