Package Includes :<br />1 x Door chime Receiver<br />1 x Push button Transmitter<br />1 x User manual<br />1 x Color Retail Box<br /><br />Equipped with waterproof transmitter with the IP rating of IP44<br />Please remove the protective film before use，the standard protection.<br />Wireless rang of up to 500FT150M，you can heat ringsseveral rooms away when someone rings the bell   <br />5 volume levels for a customizable experience. <br />The item need battery，and install 3 alkaline AA batteries，23A 12v battery<br /><br />Specification :<br />Product number:GD-MD01<br />Color: Black<br />Dimension: 5 x 5 x 5 cm ; 100 g<br />Weight: 259g<br />Power supply: AA 1.5V batteryIncluded <br /><br />