Wireless Doorbell Smart WIFI Doorbell Smart Home Security Phone WIFI Video Door Bell Camera IR Night Vision Video Intercom<br> WIFI Doorbell Smart Home Wireless Phone WIFI Video Door Bell Camera Security Video Intercom IR Night Vision For Apartments<br> Product model doorbell<br> Main control model bk7252<br> Sensor model gc0328<br> Photosensitive support<br> Audio input 1 channel<br> Audio output 1 channel<br> Infrared drive, max. 50mA<br> MicroSD card holder does not support<br> 2 keys: doorbell key and reset key<br> 2 indicators: equipment status indicator and charging indicator<br> Battery interface 1 way<br> Charging power DC 5V<br> Function and technical parameters<br> Parameter description<br> System architecture embedded FreeRTOS<br> Maximum resolution VGA, 640 * 480<br> Video coding standard mjepg<br> Audio coding standard g711 A<br> Video frame rate VGA@20fps<br> Day night switching mode automatic<br> Video preview supports 1-way P2P<br> Sound acquisition support<br> Video transmission encryption supports AES<br> Dingdong RF code EV1527<br> The infrared lamp is controlled automatically and the sensitivity level is adjustable<br> Infrared lamp wavelength 850nm<br> Distribution network mode distribution network<br> Cloud storage support, three-day rolling storage by default<br> Mobile detection support, sensitivity level adjustable<br> Connection mode: 2.4GHz WiFi<br> Power supply mode battery power supply<br> Battery power detection support, voltage is lower than 3.4V, unable to wake up<br> Firmware upgrade supports remote upgrade<br> Operating temperature: - 10 ~ 45<br> Working humidity ≤ 95%<br> Specifications: