Cheap dual camera baby monitor under £100 UK for two rooms?

What dual-camera kits are on sale under £100 in the UK?

The under-£100 shelf is almost all one small parent screen + two cameras + local radio, not Wi-Fi apps. A twin bundle in this band is a different product from a Which?-tested single-camera video Best Buy (Which? has put the cheapest video Best Buy around £80) and from a 5-inch split-screen that prices above £100.

A “twin pack” under £100 is usually two cameras and one handset. It is not two complete video systems. If a second adult needs a second screen, that is a different purchase.

How small is a 2.8-inch parent screen for two rooms?

Which? notes that video parent screens run from about 3 inches to more than 7 inches, and that the jump in size is a jump in price. A 2.8-inch panel sits at the bottom of that range. Split across two faces — or flicked between two cameras — the picture is a check, not a cinema.

• One face at a time on a 2.8-inch kit: you see one cot until you change camera. Night vision is typically infrared greyscale.
• Split on a 5-inch kit: two faces share the pixels. Fine detail (a dummy on the mattress, a twisted sleep bag) is harder than on a single full-screen view.
• VOX / sound-activation: many budget kits darken the screen until a noise crosses the threshold. That saves the parent-unit battery; it also means a silent room stays dark until SCAN or a tap.

Which? also tests whether the parent unit stands securely and how long the battery lasts. Those scores are behind the membership wall for named models. Unlisted no-name twin packs do not inherit a Best Buy from a different product.

Does under-£100 split-screen mean you hear both rooms?

Treat picture and sound as two specifications. On the Babysense HDS2 — the common UK example of a true split-screen, and over £100 — the maker states that audio stays on the camera being monitored, with SCAN hopping every 10–15 seconds. Cheap 2.8-inch twin packs are usually toggle systems: one picture, one mic, a button or auto-scan to swap.

If the listing only says “monitor two rooms” and never says “split screen” plus “audio from both”, assume one speaker. That is the same limit that matters for twins in separate rooms, and it is why some households still buy two audio parent units instead.

What should you check on the box before you pay?

1. 1
   Count the screens, not the cameras The under-£100 promise is two cameras. Confirm there is one parent unit. A second adult who wants a second picture needs a second system or a Wi-Fi app model — a different privacy and battery conversation.
2. 2
   Read SCAN / toggle / VOX Write down whether the unit hops on a timer, waits for sound, or only changes when you press a button. That is how a cry in the other room reaches you.
3. 3
   Ignore open-space range in metres Which? tests signal through rooms and outdoors because walls eat range. A “250 m open space” line on a budget box is a radio claim, not a UK-flat measurement.
4. 4
   Look for a UK plug and a model code Photograph the model on the camera, parent unit and PSU. If you later need a recall check, the marketing name is not enough. Keep the original chargers.
5. 5
   Do not treat movement pads as part of this kit Breathing or movement pads are a different product. The Lullaby Trust says there is no research showing monitors prevent SIDS, and a pad is not required for a two-room video setup.

How does this sit next to Which? tested video monitors?

Which? separates audio (Best Buys under £30 in its features piece), video with a parent unit (cheapest video Best Buy around £80) and smart / Wi-Fi (cheapest Best Buy smart monitor over £100 in its January 2026 security-camera article). A £55–£60 twin pack is cheaper than that video Best Buy band because it is a smaller screen and an untested twin SKU — not because Which? has scored it as better value.

Which? also found, in an older battery survey, that video parent units averaged about seven hours in its tests versus 13.5 hours for audio. A tiny always-on colour screen in two-camera use is the hungry part. If the listing claims 20 hours, check whether that figure is VOX with the screen off.

In shortIn short: under £100, a UK dual-camera kit is usually a 2.8-inch parent unit and two cameras for about £55–£60. You pay for two pictures you flip between, not a tested 5-inch split-screen and not a Which? video Best Buy. Audio is typically one room at a time. A 5-inch Babysense-class split kit is a step above £100 and still specifies one-camera audio unless SCAN is on.