Z20 Smart Wireless Doorbell WiFi Video Intercom with 480P Colour Camera

The Z20 Smart Wireless Doorbell is a battery-powered video intercom that lets you see and talk to visitors from your phone. It connects over 2.4GHz WiFi and supports RF 433MHz ding dong, so there is no need for complex wiring. The 100° wide-angle lens captures 480P video at 7fps, and the built-in microphone and speaker enable two-way conversation through the app. With support for up to nine users (one main account plus eight sharing accounts), three people can preview the screen at once and one person can talk at a time. Night vision uses two 850nm infrared LEDs, giving the clearest image at around 1 metre and usable range up to 3 metres. The polymer 803035/800mAh battery offers deep sleep standby of up to one year, depending on use, and recharges via USB at DC 5V/1.5A.

Features and Construction

The Z20 uses an XR872 main control with 32Mb flash and a 30W GC0328 CMOS sensor. It supports automatic white balance, automatic gain control and automatic backlight compensation. Signal-to-noise ratio is ≥41dB, with minimum illumination of 0.8Lux/F1.4 in colour mode and 0.3Lux/F1.4 in black and white mode. Images are stored as JPG.

Material and Build

The doorbell is powered by a 3.7V polymer 803035 battery with 800mAh capacity. Working current is 219mA, deep sleep current is 10mA and infrared operating current is 280mA. The unit is designed for operating temperatures from -10°C to 50°C and humidity below 95%. The colour box measures 97*82*35mm and the product weighs 120G. Available colours are black and gray.

Size and Practical Fit

The 100° lens angle provides a wide field of view for typical doorways. Night vision is most effective at 1 metre and reaches up to 3 metres. The compact colour box size of 97*82*35mm makes it easy to store or gift. The doorbell is wireless, so placement depends on WiFi signal strength and the RF 433MHz ding dong range within the home.

Uses and Placement

This doorbell is suitable for rented flats, homes with no existing doorbell wiring, or as an additional entrance camera. It can be used at a front door, back door or flat entrance where a 2.4GHz WiFi signal is available.

Event or Professional Use

For short-term rentals or small offices, the multi-user support allows up to nine accounts to be connected, with three simultaneous previews and one talker. The button-triggered recording captures a 5-second clip (5 pictures) to cloud storage, which is useful for logging visitor activity without a TF card.

Everyday Home Use

Guests can visit and use the video voice call, and the host does not need to open the door to know the visitor's information. Short-time video recording is triggered by the doorbell button. The cloud storage includes a free three-day cycle, storing 5-second clips (5 pictures). There is no TF card function, so all storage is via the cloud.

Benefits and Buying Value

The Z20 combines a camera, intercom and doorbell chime in one wireless unit. It reduces the need for wired installation and allows remote viewing and conversation through the app. The battery-powered design means no mains wiring is required.

Reuse and Low Maintenance

The polymer battery hibernation standby lasts up to one year, depending on use, and recharges via USB at DC 5V/1.5A. The unit operates within stated temperature and humidity ranges. There are no filters or consumables to replace. Cloud storage is included with a free three-day cycle, so no TF card is needed.

Why Choose This Product

The Z20 offers 480P video, 100° wide-angle lens, two-way talk, night vision up to 3 metres, and multi-user access for up to nine accounts. It supports 2.4GHz WiFi (802.11b/g/n) and RF 433MHz ding dong. Available in black or gray, it is a practical wireless doorbell for homes without existing wiring. The colour box measures 97*82*35mm and weighs 120G.