How do I factory reset a second-hand baby monitor?

Ask the seller to unlink before you power on

A factory reset on the camera is only half the job. Which? says that for smart monitors the previous owner should fully delete their information and account access before you take ownership. The NCSC's second-hand-device guidance says the seller should erase personal data (a factory reset) before sale, and the buyer should reset again before use.

If you plug a still-linked Wi-Fi camera into your broadband first, it can call home to the seller's app. Ask for a screenshot: device removed from their account, then reset. Do not connect it to your Wi-Fi until that is done — or do the reset on a hot-spot you will throw away. The previous-owner viewing page covers the cloud side in more detail.

NCSC: if you think someone has taken control of a device in your home, reset it using the manufacturer's instructions. A used camera that still shows the seller's email is that situation, not a pairing quirk to ignore.

Is a pinhole reset the same as a menu factory reset?

No. The menu path (Settings → Reset / Restore / Erase all) is the one the maker documents for handing a device on. The pinhole (or a long hold on LINK / RESET) is a hardware fallback when you cannot open the menu — no password, frozen screen, or no parent unit. BT's UK help page, for its own cameras, says: hold LINK on the back of the camera for 20 seconds until it beeps, then re-link to the parent unit. That sequence is BT's, not a universal pin recipe.

1. 1
   Find the exact model code Photograph the label on the camera, the parent unit and the plug. Recalls and reset PDFs are written to that code, not the marketing name. See how to check a used monitor for a recall.
2. 2
   Open the maker's UK support page Search that model plus 'factory reset' or 'restore default'. NCSC: steps vary by device; use the manufacturer's site. Do not follow a US pin-hole video for a different board.
3. 3
   Menu reset if you can sign in If the seller left you in the app, use the in-app or on-screen factory reset, then sign out. Confirm the camera disappears from their account.
4. 4
   Pinhole or LINK hold if you cannot Use only the hold-time and button the UK page names for that model. After a hardware reset you usually have to pair the parent unit or run first-time setup again (BT documents a separate re-link after its 20-second hold).
5. 5
   Set up as new, on your account New email, new password (NCSC: three random words; change any default). Turn on two-step verification if the app offers it. Switch on automatic updates.

What does a reset not clear?

• The seller's cloud login, if they never removed the device. Reset the camera and check their app (or ask for the screenshot). Which? treats leftover account access as the extra care smart monitors need.
• A parent-unit pairing on a non-Wi-Fi kit. A dedicated screen-in-the-box pair has no cloud account. You still reset both ends and run the maker's pairing steps so you are not on the seller's leftover link.
• Firmware that is out of support. NCSC: avoid devices the maker no longer updates. From 29 April 2024, UK PSTI rules for new connectable products include a published minimum security-update period. A used camera may pre-date that. Check the maker's support end date.
• A recall or a tired battery. A reset is not a search of the GOV.UK Product Safety Alerts, Reports and Recalls list. Not found on that list means no recall on file, not a clean bill of health.
• A random USB plug. Electrical Safety First: buy chargers from a reputable retailer, check for UKCA or CE marks, and look for burn marks. Use the original PSU if the seller still has it.

What about the plug and the GOV.UK recall list?

Second-hand listings often swap the camera and leave a no-name 5 V plug in the box. Electrical Safety First says USB chargers must meet the Electrical Equipment (Safety) Regulations 2016, and to unplug if you see smell, spark, smoke, swelling or scorch marks. Register a charger you keep so a later recall can reach you.

Search the model code on the OPSS list on GOV.UK, then the maker's own safety page. MayTally's second-hand safety lookup is a shortcut to a hand-picked set of those notices, not a replacement for the GOV.UK list. Follow the notice if the model is listed; if it is not, you have cleared one gate.

Official records show a listed recall means: stop using the product and follow the corrective action. Selling a recalled product knowingly can be an offence. A factory reset does not remove a recall.

After the reset: new account and updates

Which?'s five points for an internet camera still apply to a used one: strong unique password, two-factor authentication if offered, install updates, turn remote access off if you do not need it, and ask the maker how long the model is supported. NCSC repeats the password, 2-step verification and updates steps for any smart device.

The Lullaby Trust's position is unchanged by a reset: a monitor is not a substitute for an adult in the same room for the first six months, and the control unit stays out of the baby's reach.

In shortUnlink on the seller's account, reset on the unit (menu or the pinhole the UK page names), then a new account and a GOV.UK model search. A reset clears local pairing. It is not a recall check and it is not a verdict on the battery or the plug.