1、Adopt wide‑angle lens, intelligent infrared recognition, when the light is insufficient, it will automatically switch the night vision mode, you can see any abnormality outside the door at night. 2、Even when you are out of the house, you can actively wake up monitor by mobile phone at any time and anywhere and master the dynamics so that you will not miss any picture. 3、24 hours automatic abnormal sensing and capture video (need to be equipped with storage equipment) and push abnormal message to mobile phone, constantly remind. 4、Using WiFi can be connected with the Ding Dong doorbell, music ringtone can be changed, it can also achieve intelligent interaction with other for TUYA supported products. 5、With the function of two‑way real‑time intercom with echo elimination, infrared night vision, night vision range up to 10 meters. 6、Battery powered (not built‑in) doorbell, no wire connection, 50 meters strong penetration, no worry about receiving no signal, no sound. 7、With the 166‑degree large wide‑angle lens, outside/courtyard/corridor/corridor and other corner pictures are at a glance. Item Type: Wireless Doorbell Material: ABS PlasticFeatures: Wireless connection, ultra-low power consumption, remote dynamic wake up, fast start Usage: It can make video voice call and short video recording when guests come to visit, the host can know the guest information without opening the door. Wake-Up Type:  Doorbell button, PIR human body detection, Mobile phone active Alarm Push: Push rapidly within 1 second Low Power Solution: For HiSilicon liteos low-power solution Support: Multiple users online at the same time Dynamic Domain Name: Its own dynamic domain name Processor: Adopts powerful and high-performance programmable media, for HiSilicon processor HI3518E, built-in ARM926 at Max.440MHz and high speed VICP Sensor Performance: Support automatic white balance, automatic gain control, automatic backlight compensation SNR: ≥39DB Lens/Viewing Angle: Lens Angle is 166 degrees Night Vision: Double filter automatic switch, 6PCS 850nmΦ28Mil high-power infrared lamp, night vision within 10m/11yd IR Control: IR on, night vision enabled, infrared, ICR automatic detection; IR off, infrared, night vision function disabled, ICR fixed in the day vision mode Compression Standard: H.264 Main Profile/ H.264 Baseline Profile/MJPEG Baseline /JPEG Baseline Resolution: 1920 x 1080 Code Rate: CBR/VBR two code rate control mode, and the output code rate range is 128-4096kbps Output: Built-in speaker (8Ω1W) Intercom: Two-way voice intercom, with echo elimination Compression Standard/Code R ate: ADPCM/ 32KbpsNetwork Protocol: TCP/IP,HTTP,TCP,UDP,SMTP,FTP,DHCP,DNS,DDNS,NTP,UPnP,RTSP,P2P, etc.Wireless Network: 802.11b/g/n Wireless Network Security: WPS secure encryption Wireless Connection: One-click WiFi configuration Record Mode: Motion detection video, doorbell button trigger video, manual video recording Storage: Memory card storage support up to 32G(Not include) Power Supply: Battery power 2 x 18650 batteries (not built-in) international universal Work Temperature: -10-50 ℃Working Humidity: <95% Power Consumption: Standby current 120μA, working current 170mA Installation Method: Door wall hanging installation Size: Approx.141.5mm x 45.5mm x 32.4mm/5.6in x 1.8in x 1.3in(length x width x thickness) Ding-Dong Doorbell Parameters: Power Consumption: 10mW Sensitivity: -100dbm Volume: 10-110db Working Frequency: 433.92 MHz +-280 KHz Output Power: 0dbm Size: Approx.81 x 81 x 20mm/3.2in x 3.2in x 0.8in(length x width x thickness) Instructions: After the doorbell is installed, you can download the graffiti APP on your mobile phone, connect it with WiFi, and then use the APP to use other functions. The buzzer can also be connected with the doorbell when plugged in. 1 x Doorbell Host 1 x Buzzer 1 x Little Wrench 1 x Screw Mounting Kit 1 x Sticky Board Posted 1 x Doorbell Fixing Plate 1 x Instructions