<p>Features :</p> <p>Tunes: 55 options</p> <p>Volume: 5 level adjustable levels 0dB to 100dB</p> <p>Receiver Power: 110-240V</p> <p>Transmission Range: 600ft in open area</p> <p>Frequency: 433Mhz</p> <p>Blue LED Flashing Alert</p> <p>When you press the button of transmitter, it will flash blue light adding the additional alert for the hearing impaired people. And the receiver will ring and flash blue light when receiving signal.</p> <p>Easy to match with video doorbell</p> <p> Press Forward or back button to choose your favorite tune, the doorbell playing is the tune selected.</p> <p> Hold volume button for 5s until a chime is heard and blue LED indicator is flashing.</p> <p>Color : Black</p> <p>Package Include:</p> <p>1xUS Downtime</p>