Will a Pendant Alarm Work in a Power Cut? UK Test Checklist
A pendant alarm may look exactly the same after a home telephone line changes, but appearance alone cannot confirm that an emergency call will reach the monitoring service. This guide helps families ask the right questions, arrange a safe test and keep a written record.
Why pendant alarms and digital phone lines need checking
Traditional home telephone services could carry power through the telephone line. Modern digital phone services normally depend on electrical equipment inside the home, such as a router or telephone adapter. This means a home phone connection may be affected by a household power cut unless a suitable backup arrangement is present.
Many older telecare units were designed to send their alarm signal over an analogue telephone connection. Some can operate through an adapter on a digital line, but compatibility and reliability depend on the particular alarm, connection and household setup. For that reason, a family should not assume that an alarm is compatible simply because it is plugged in or because its button lights up.
The safest approach is straightforward: identify the equipment, tell both relevant providers that a telecare device is used, arrange an end-to-end test and record what has been confirmed.
The difference between pressing the button and completing a test
A pendant making a sound is not necessarily proof of a successful emergency connection. A useful test confirms the complete route from the wearable button to the person or service expected to answer.
During an arranged test, check whether:
- the pendant activates the base unit;
- the alarm call reaches the monitoring service;
- the operator can identify the user and address correctly;
- two-way speech can be heard clearly;
- the pendant works from the rooms and outdoor areas where it is normally worn;
- the system reports a low battery or connection problem as intended; and
- an agreed backup is available if electricity or the main connection is lost.
Before calling: identify the household setup
You do not need to understand technical jargon. Collecting a few basic facts will make the conversation much easier.
| What to check | What to write down |
|---|---|
| Alarm equipment | Name or model shown on the base unit, if visible |
| Wearable device | Pendant, wrist button, fall detector or another device |
| Telephone connection | Wall telephone socket, router, adapter or mobile connection |
| Recent changes | New router, new telephone service, house move or engineering visit |
| Backup equipment | Battery unit or another method of calling for help |
| Mobile coverage | Whether a usable mobile signal is normally available inside the home |
Do not move cables merely to identify them. A clear photograph of the base unit, plugs and router may help the alarm provider understand the installation.
Seven questions to ask the alarm provider
- Is this exact alarm compatible with the telephone connection currently installed at the property?
- Has an end-to-end test been completed since the telephone service or router last changed?
- How should we perform a routine test call, and how often do you recommend testing?
- What happens to this system during a household power cut?
- Which parts have backup batteries, and approximately how long are they intended to operate?
- How will the user know that the battery, connection or pendant has a problem?
- Who should we contact if the alarm, router or telephone service changes?
Ask for answers relating to the actual equipment at the property. A general statement about “digital compatibility” is less useful than confirmation that this installation has been checked and that a test call reached its destination.
Questions for the telephone provider
Tell the telephone provider clearly that a person at the address relies on a telecare or personal alarm. Ask:
- whether the line is already digital;
- whether any further migration or engineering work is planned;
- what happens to calls during a power cut or broadband outage;
- which backup options are available for a vulnerable customer;
- whether the household's additional needs have been recorded; and
- whether changing the router, package or provider could affect connected equipment.
The telephone provider can explain the phone connection and available resilience measures. The alarm provider is the appropriate source for confirmation about the alarm itself. Contact both rather than assuming that one organisation can verify the entire setup.
A safe ten-minute routine alarm check
- Tell the alarm provider that you want to make a test call.
- Follow the provider's instructions for the installed system.
- Press the wearable button from a normal location in the home.
- Wait for the monitoring service to answer.
- Say clearly that this is a planned test and no emergency assistance is required.
- Confirm the user's name, address and emergency contact details held on the account.
- Ask whether the signal and speech were received clearly.
- Repeat from other important locations only if advised, such as the bedroom, bathroom doorway or garden.
- Record the result and any action required.
Never deliberately fall to test an automatic fall detector. These devices may not detect every fall, and a user who is able to do so should still press the alarm button. Ask the provider how that particular feature should be checked.
Pendant Alarm Test Record
Print this section and keep it near the alarm base unit without displaying sensitive medical details.
| Date | Test location | Call received? | Speech clear? | Action or reference |
|---|---|---|---|---|
Alarm provider telephone number: __________________________
Telephone provider contact: _______________________________
Family or nominated contact: ______________________________
Date the digital-line setup was last confirmed: _____________
Backup arrangement recorded: ______________________________
Free safety resource from https://pryhelm.co.uk/
When should the alarm be tested again?
Follow the frequency recommended by the alarm provider. It is also sensible to request another test after any change that could affect the connection, including:
- a new router or telephone adapter;
- a change from an analogue to a digital phone service;
- a change of telephone or broadband service;
- moving the alarm base unit;
- an extended power cut or connectivity problem;
- a replacement pendant, battery or base unit; or
- a house move.
What if the test does not connect?
Treat an unsuccessful test as a practical problem to resolve, not as proof that any particular organisation is at fault. Keep the person accompanied if their safety depends on the alarm, use an agreed alternative means of obtaining help and contact the alarm provider promptly.
Write down the time, what happened, any lights or spoken messages from the unit and whether the home phone or internet appeared to be working. Do not repeatedly reconnect cables or reset equipment unless instructed. The provider may need to check the device, communication path, account details or household installation.
Create a simple backup plan
No single device should replace an appropriate care plan. A proportionate backup might include a charged mobile telephone, accessible emergency numbers, a nearby trusted contact and an agreed welfare-check arrangement. The right plan depends on the person's needs, mobility, cognition, mobile coverage and the expected duration of any backup battery.
If the person cannot use a mobile phone or there is poor mobile reception, raise this explicitly with the relevant providers. Do not buy or alter equipment based solely on a general online article.
Frequently asked questions
Will every older pendant alarm stop working on a digital line?
No. Compatibility varies according to the alarm, communication method and installation. Some equipment may operate through an adapter, while other systems use a digital or mobile connection. The individual setup must be confirmed and tested.
Does a battery inside the pendant mean the complete system works in a power cut?
Not necessarily. The pendant, base unit, router, adapter and communication service can have different power requirements. Ask what powers every part of the route and arrange a provider-led test where appropriate.
Can I test the alarm without causing an emergency response?
Usually, a monitoring service can recognise a planned test call, but procedures vary. Contact the alarm provider first and follow its instructions.
Who is responsible for checking compatibility?
The household should disclose that an alarm is present. The telephone provider can explain the line and its backup arrangements, while the alarm provider can confirm requirements for the alarm. A recorded end-to-end test gives the family much stronger reassurance than an assumption.
Should families wait until the telephone line changes?
No. If an alarm is already present, identify the connection and ask for confirmation now. Repeat the check after any relevant change.
The key point
A pendant alarm is most reassuring when the whole connection has been tested—not merely when the button beeps. Confirm the installed equipment, speak to both providers, arrange a safe end-to-end test, understand the power-cut plan and keep a written record. Those few steps can reveal a problem before the alarm is needed in a real emergency.
Official further reading
- National action plan for protecting telecare users during the digital phone switchover
- Official preparations for the analogue-to-digital switchover
Reviewed: September 2026. Recheck official guidance periodically because the national switchover programme and provider arrangements may change.
