Smart Wirele Doorbell HD Night Vision WIFI Visual Door Phone Two-Way Audio Security Cameras Doorbell Tuya APP Control Remote Monitoring for Home Indoor OutdoorFeature:1. Convenient Music Chime:The wirele doorbell is equipped with a Dingdong music box that can be activated with just one pre, making it easy to hear visitors at your door.2. Versatile Music Options:The video doorbell with 19 different music options and 4 volume levels (high, medium, low, and mute), you can customize the doorbell chime to your liking.3. Reliable WiFi Connection:The home doorbell supports 2.4G wirele network connectivity, ensuring that you won't mi any visitors whether you're at home or away.4. Clear Night Vision:The built-in 4 LED infrared lights provide superior night vision capabilities, allowing you to see visitors clearly even in the dark.5. Easy to Install:With no wiring required, the door bell can be easily installed using screws or adhesive tape, making installation quick and hale-free.Specification:Origin: Mainland ChinaModel Number: M8Communication method: Wi-FiDoor bell parameters:Product Name: DoorbellEquipment model: M8Color: black, white (optional)Applicable scenario: indoor/outdoorOperating system: for LiteOS/LinuxChip model: BK7252Does it support echo cancellation? YesSensor type: GC0328 CMOS sensor;Effective pixels: 300000, 480PAppearance: ABSFocal length: 2.0mmDiagonal angle of view: 80 Infrared night vision: supportedNight vision distance: 1 meter is optimal, with a maximum distance of 3 metersFrame speed: 7 framesVoice intercom: bidirectionalPickup function: built-in microphone, with a pickup distance of 3 metersSpeaker: 8 0.8WMotion detection: not supportedWired network: not supportedWiFi standard: IEEE 802.11 b/g/nVideo encoding: JPEGAudio encoding: G711AVideo review: not supportedMemory card: not supportedWorking temperature: Working temperature: -10~50 , working humidity<95%Power supply: DC3.7V 1000Mah lithium battery power supplyIP:IP55Power cord length: 30CMInstallation method: drilling/gluingSize: 85x53x24mm/3.34x2.08x0.94inchDing Dong Music Box Parameters:Music: 19 piecesVolume selection: 4-speed volume (high, medium, low, mute) selectableSpeaker: 8 ohms and 1 wattDistance: A straight line distance of 50-60 meters in an open area, with a distance of approximately 30 meters through the wallWorking temperature: Working temperature: -10~50 , working humidity<95%Power supply: 5V1AMaximum working current: 80mAStandby current: 5mAFrequency: 433.92MHzTransmiion power: 13dBmSize: 55x42x13MM/2.16X1.65x0.51inchInstallation method: USB plug and playA set of parameters:Packaging size: 139x96x28mm/5.47x3.77x1.10inchGro weight: 140g Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement. 1 x Doorbell1 xDingdong Music Box1 xType-C Charging Cable3 xScrew2 xRubber Stopper1 xBack Glue1 xInstructions