[Long Range] Adequate radio range (280m/1000ft in open area) is very suitable for your home, and the signal can penetrate obstacles well. Whether you are cooking in the kitchen or weeding in the garden, this doorbell will notify you in time. Never miss a visitor! [Waterproof and Weatherproof] The wireless doorbell adopts IP44 waterproof technology, the working temperature is -30°C to 70°C, and is also suitable for outdoor use. Such as. They work well in rain, snow or sub-zero temperatures. [Easy Installation] Simply plug the receiver into a wall outlet, then use the adhesive tape or screws to install the button on the wall or door frame. When someone visits, the blue LED will flash. [Different Tones and Volume] You can choose 36 different ringtones, from classic to popular melodies. Adjustable volume from 25db to 85db can be adjusted in 4 levels [Indoor and outdoor radio doorbell] 2 receivers and 1 transmitter, no batteries, no annoying cables. IP44 waterproof button is suitable for