<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><div class="ai-description"><div class="origin-part box-sizing"><p></p></div></div><p><span style="color:rgb(0, 0, 0);font-size:22px"><strong>Feature：</strong></span></p><p>Ringtones available and 3-step volume control （0 ~85dB）, When someone presses the doorbell, the eye-catching backlight flashes. Especially suitable for the elderly, deaf and pregnant women, use machine learning to prevent. interference from other wireless transmitte,Design service life up to 25 years.</p><div> </div><p><span style="color:rgb(0, 0, 0);font-size:22px"><strong>Specification：</strong></span></p><div class="detailmodule_text"><p>① Operating frequency: 433MHz</p></div><p>② Receiving distance: 300m (in open area)</p><p>③ Size: 75x51x20mmreceiver size: 95x65x24mm</p><p>④ Voltage: AC110V-220V-240V</p><p>⑤ Transmitter 12v23a battery factory pre-installed (battery not included)</p><div> </div><p><span style="color:rgb(0, 0, 0);font-size:22px"><strong>Package included：</strong></span></p><p><span style="color:rgb(51, 51, 51);font-size:14px">1× Plug-in receiver</span></p><p><span style="color:rgb(51, 51, 51);font-size:14px">1 × Battery Transmitter</span></p><p><span style="color:rgb(51, 51, 51);font-size:14px">1 × EU Plug</span></p><div> </div><br/></div></div><br/>