Usage Tips:Feature: 1. With a powerful signal range of up to 100 meters, the kit allows convenient remote control without visual connection through walls and doors. 2. The intuitive configuration of the compact receiver in standard flush-mounted boxes allows effortless integration into existing roller shutter systems. 3. The wireless roller shutter control kit facilitates wireless control of hard-to-reach roller shutters, ideal for people with limited mobility, and allows flexible placement of the remote control. Features: Rated voltage: AC (alternating voltage) 100V - 240V. Operating frequency: 50/60Hz. Frequency: 433MHz. Standby power consumption: 0.2W. Load power: 16A. Range: about 100m. Operating temperature: -20 ~ 55 C. Receiver dimensions: 5.2 x 4.5 x 2.5cm. Remote control dimensions: 11 x 3.5 x 1.5 cm. Contents: 1 x receiver (relay) 1 x transmitter (remote control). 4 x dowels. 4 x screws.