Smart learning mode User-friendly design<br> Strong Signal - It can penetrate 3-4 walls and wireless range up to 150 meters in open area,great for house including villas, apartment,offices,shops,warehouses.etc.<br> IP68 Waterproof level - Rainy can also be used,saed and durable<br> 38 Home Welcome Door Chimes - The doorbell can be when sleeping<br> Not only a doorbell but also a pager - When the elderly,babies,and pregnant women sleeping alone have needs,press the transmitter and will ring.<br> Note<br> 1. This product is a set, the receiver and controller purchased separately cannot be used, and need to be paired for use.<br> 2. The button cannot be placed on the iron door, which will shield the signal. We recommend that the button be placed to the iron door.<br> Power consumption:0.25w<br> Wireless frequency:433 MHz<br> Operating temperature: -10-+45C<br> Ringtone volume: 50dB/1m<br> Transmitter:no need battery<br> Wireless distance:150 meter(open space)<br> Plug Type:EU Plug,it applies to Indonesia, Germany, France, , Italy and so on.<br> Voltage:AC100-240V<br> Colour:White<br> Material:plastic<br> Size:Receiver size:L95xW54xH68mm, Transmitter size:L80xW50xH28mm<br> Package Contents:<br> 1 * Button<br> 1 * Receiver<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store