Reolink RP-WCB8MZ wireless camera 8 MP 4K, Wi-Fi 6, 5× zoom, IP67

Eight megapixels, or 4K UHD resolution, means four times as many pixels as a Full HD camera. You can enlarge a recording later and make out details such as a person's clothing or the colour of a car without the image turning to blur. That helps when the camera covers a large area and the event happens near the edge of the frame.

Optical zoom changes the lens focal length instead of stretching the image digitally, so resolution is kept when you zoom in. With five-times zoom a single camera can cover a wide yard and still give a close look at a distant gate, mailbox or driveway, without installing a second camera.

The camera joins your network over Wi-Fi 6, so there is no data cable to run through the wall of the house. Wi-Fi 6 is a newer standard that copes better with busy networks where many devices are active at once. For good results the router should also support Wi-Fi 6 and the camera should sit within solid signal range.

An IP67 rating means the housing is fully dust-tight and withstands temporary immersion in water. Rain, snow and dust do it no harm, so it can be mounted on a house wall, under the eaves or on a fence post. The bullet housing also signals clearly that the area is under surveillance.

Owners of houses and holiday homes who want to cover a yard, driveway or gate with 4K video without running a data cable; small businesses with large grounds and a distant entrance; and anyone who prefers recording straight to a microSD card inside the camera.