Description: Product model doorbell Main control model bk7252 Sensor model gc0328 Photosensitive support Audio input 1 channel Audio output 1 channel Infrared drive, max. 50mA MicroSD card holder does not support 2 keys: doorbell key and reset key 2 indicators: equipment status indicator and charging indicator Battery interface 1 way Charging power DC 5V Function and technical parameters Parameter description System architecture embedded FreeRTOS Maximum resolution VGA, 640 * 480 Video coding standard mjepg Audio coding standard g711 A Video frame rate VGA@20fps Day night switching mode automatic Video preview supports 1-way P2P Sound acquisition support Video transmission encryption supports AES Dingdong RF code EV1527 The infrared lamp is controlled automatically and the sensitivity level is adjustable Infrared lamp wavelength 850nm Distribution network mode bluetooth distribution network Cloud storage support, three-day rolling storage by default Mobile detection support, sensitivity level adjustable Connection mode: 2.4GHz WiFi Power supply mode battery power supply Battery power detection support, voltage is lower than 3.4V, unable to wake up Firmware upgrade supports remote upgrade Operating temperature: - 10 ~ 45 Working humidity 95% Specifications: 1.Video CallEasy to deal with visiting guests, when someone presses the doorbell, the doorbell will push notification to the phone, and the owner can enter the phone video conversation interface, which supports sharing to up to 10 members at the same time. 2.Capture screenStorage to the cloud, security protection drip. When a visitor presses the doorbell, it can capture the visitor's picture and save the record to the cloud, so that the cell phone APP can view the past pictures at any time, which is safer and more secure. 3.Portable InstallationCan be pasted and perforated. Support 3M adhesive backing, no need to punch holes, while supporting hole punch installation. No plugging, convenient and hassle-free. 4.Long StandbyNo disassembly cycle charging. Built-in lithium-ion high-capacity battery, standby 365 days Say goodbye to the trouble of frequent battery replacement. 5.[ultra wide angle lens] let the doorbell clearly record the movement of the front door without missing every key picture Package Included: 1 * visual doorbell, 1 * dingdong machine 1 * manual