?<strong>Features:</strong><br />Wireless doorbell， with LED light indication.<br />Do not need any wire to connect the push button with the receiver.<br />Long transmission distance: up to 120 meters.<br />16 different ring tones for your choice.<br />Adjustable sound volume.<br />Low crosstalk rate.<br />Suitable for homes， hotels， hospitals， factories， shops， etc.<br />Low power consumption.<br />Environmental protection.<br />Supplied with an adhesive pad and screws for easy installation of the push button.<br /><br /><strong>Specifications:</strong><br />Certificate: CE<br />Color: white & blue<br />Material: ABS<br />Ideal transmission distance (open field): 120m<br />Frequency: 315MHz<br />Power supplied by: push button: 1 * 12V 23A battery， receiver: 3 * 1.5V AA batteries (not included)<br />Sound level: ＞80dB<br />Push button size: approx. 7.2 * 3.8 * 2cm / 2.8 * 1.5 * 0.7in    <br />Push button weight: 19g / 0.6oz<br />Receiver size: approx. 11.7 * 7.6 * 2.1cm / 4.6 * 3 * 0.8in<br />Receiver weight: 83g / 2.9oz    <br />Package size: approx. 24.2 * 17.2 * 3cm / 9.5 * 6.7 * 1.1in<br />Package weight: 164g / 5.7oz<br /><br /><strong>Packing list:</strong><br />1 * Push button<br />1 * Receiver<br />1 * Adhesive pad<br />2 * Screws