Intercom doorphone for double rooms, two hundred talk distance, more convenient.<br>Operation distance 200m, 2-line connected, strong signal and clear communication.<br>Easy to install, DIY installation, can be placed on the desktop or hanging walls.<br>Energy saving and no current consumption while not work.<br>Practical and convenient, widely used in offices, warehouses, families, etc.<br><br>Specifications:<br>Battery: 1.5V (each unit need 4pcs AA batteries, the batteries are not included)<br>Working Currency:<br>Bell Rings Grade: 70DB(0.5 meter distance)<br>Connection: by wire RVV2 (the cable is not included for this listing)<br>Size: . 22.2 x 8.7 x 7.3cm/8.7 x 3.4 x 2.9inch<br>Note:<br>When using, you need to connect the radios of the same color (within a range of 50 meters, it is to use RVV2x0.5mm line, and within 100 meters, it is to use RVV2 x 1.0mm line)<br>Note: The delivery is 2 pieces<br>Colour: White<br>Material: ABS<br><br>Package Contents:<br>2 x Wired intercom doorbell<br><br>Only the above package content, other products are not included.<br>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.