1 Outdoor-bell is power supplied by 4pcs alkaline batteries(not included), easy to replace the battery, indoor-bell is power supplied by USB cable. 2 Low power consumption, long standby time for outdoor-bell up to 6 months. 3 Big and adjustable speaker, clear voice, can be used as mobile interphone. 4 Strong and stable wireless distance up to 200m / 656.2ft. 5 Outdoor-bell pair with indoor-bell by learning its code, 1 outdoor-bell can paired with N indoor-bells and no interference each other. 6 Apply to house, factory, hotel, hospital, super market and office. 7 Press bell button on outdoor-bell, indoor-bell will make a sound, now hold Answer Button on the indoor-bell to speak.
What's in the box
1 x Smart Wireless Voice Intercom Doorbell
