Waterproof Wireless Doorbell US Plug 350M Remote Waterproof CALL ring Door Bell Chime 110v-220V 1 2 button 1 2 receiver Smart Home Door Bell 60 musics

Notes:1. It is not recommended to install the transmitter on the iron door. The metal material will interfere with the penetration of the RF signal. Please install it next to the iron door2. The distance is an open distance. The more obstacles there are, the more serious the signal loss will be, and the distance will be shortened3.This product comes with a 6-month warranty. If the product is damaged during transportation, please take a photo and contact us to explain the situation. We will ship it again. If you have any questions, please consult customer service for assistance.Technical parameters:--Power supply: battery power supply (CR2032 battery);self-generation (no battery required)--Power consumption: 0.25W--Music: 60pcs--Ringtone volume: maximum 120db--Heavy Weight: 120g--Signal transmission distance: greater than 350 meters (open space);self-generation (no battery required) greater than 250 meters (open space)--RF frequency: 433MHZ--Working temperature: -20°C~60°C