X9 intelligent wireless doorbell visual doorbell wifi doorbell standard configuration Ding Dong machine rechargeable built-in battery Parameter Description Product category VGA smart doorbell Product model DoorBell Main control model BK7252 Sensor model GC0328 Photosensitive support Audio input 1 channel Audio output 1 channel Infrared drive maximum 50mA MicroSD card holder does not support Two keys: doorbell key and reset key Two indicators: device status indicator and charging indicator Battery interface 1 way Charging power supply DC 5V Function and technical parameters Parameter Description System structure embedded FreeRTOS Maximum resolution VGA, 640 * 480 Video coding standard MJEPG Audio coding standard G711. A Video frame rate VGA@20fps Day and night switching mode automatic Video preview supports 1-way P2P Accompanying sound acquisition support Video transmission encryption supports AES Dingdong RF code EV1527 Infrared light control automatic, sensitivity level adjustable Infrared lamp wavelength 850 nm Distribution network mode Bluetooth distribution network Cloud storage support, with three days of 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 lower than 3.4V, unable to wake up Firmware upgrade supports remote upgrade Working temperature - 10~45 ℃ Working humidity ≤ 95% [Smart and convenient doorbell] Our smart doorbell is connected by wireless WiFi, realizing two-way intercom between doorbell and mobile phone. It supports two-way calls, photos and recordings to make families safer. The function of voice switch is to make male voice at home and protect children and women when they are alone. [Clear video] Our video doorbell has high-definition clear video and infrared night vision function. Automatic opening at night, all details are in front of the door, reliable and practical. When a visitor rings the doorbell, a notification will be sent to your mobile phone, and you can answer it in the video call interface. At the same time, the automatically captured pictures are saved in the cloud, and the access records can be viewed in the APP. [How to install] This wireless doorbell camera does not need any complicated tools. It can be easily installed with stickers or screws. There are two ways to install it with stickers or physical screws. The installation time is less than 5 minutes. [Convenient to use] The doorbell can be controlled through APP, automatic working mode, intelligent and portable. It's easy to use.