DPI is a smart,wire-free door viewer with motion detection, enabling you to see and speak to the person at your door with its HD video and crystal two-way intercom, you will never miss a visitor
left and right compatible WIFI 2.4 G U SMART GO APP Fingerprint Password IC 13.56 MHz MI fare card Mechanical key Emergency 300 USERS 100 of them Fingerprint It Talking in English It works indoor environments only Battery 7.4V lithium 4200 mah There is emergency power input 5V 2A Micro USB