Bed alarms for elderly people: the five types, and whether they prevent falls

What does a bed alarm actually do?

A bed alarm senses that a person's weight has left the bed, or that they have moved toward the edge. It then sounds a buzzer, or signals a pager or phone. That is the whole job. It does not know whether the person landed safely.

There is also a seconds problem: someone who stands quickly can be on the floor before anyone reaches the room.

What are the five types, and who does each suit?

Vendor claims, not tested results. Smart Caregiver says "Orders can be shipped anywhere within the United States and Canada" and that "Tariffs, duties, or other taxes for shipments outside of the United States are the responsibility of the customer" (shipping policy, checked September 2026). Lunderg says "Currently, we only ship within the United States", and points buyers outside the US, Canada included, to Amazon.ca (Lunderg, checked September 2026). SafeWander states free shipping but does not say whether it ships to Canada (SafeWander, checked September 2026).

Do bed alarms actually prevent falls?

The best evidence says no, not by themselves. Almost all of it comes from hospitals, with one systematic review covering long-term care.

The biggest trial covered 27,672 patients across 16 units of one US hospital. It raised bed alarm use 36-fold, to 64.41 alarm-days per 1,000 patient-days against 1.79 on usual-care units, so this is more alarms against usual, low use, not against none. Falls did not fall: 5.62 per 1,000 patient-days on intervention units versus 4.56 on usual-care units (risk ratio 1.09, not significant). Injurious falls did not differ either (Shorr et al., 2012).

The UK REFINE trial linked bed and chair pressure sensors to nurse pagers. It found 8.71 versus 9.84 bedside falls per 1,000 bed days, not significant, and the sensors did not give good value for money (Sahota et al., 2014).

A 2025 Australian randomised trial across 18 wards in Victoria cut alarm use by 7.6 percentage points. Fall rates were 9.94 per 1,000 bed days with usual use, 11.15 with reduced use, 10.31 with alarms eliminated. The authors called reduced use non-inferior to usual care, but called the margin marginal, and said it is still uncertain whether removing alarms entirely is non-inferior (Pu et al., 2025).

In long-term care, a review of 28 studies concluded that "bed alarms alone are relatively useless as an intervention". Across 61 barriers coded in those studies, the commonest were being ineffective as a standalone intervention (23 of 61) and caregiver alarm fatigue (12 of 61) (Mileski et al., 2019). False alarms are part of it: a small Malaysian hospital study of one under-mattress device (31 patients) reported a 31% nuisance-alarm rate (Subermaniam et al., 2017).

We searched the published literature in September 2026 and found no randomised trial of a bed alarm or a room sensor in a private home; every trial we could locate was run in a hospital or a residential care facility, so the home evidence base is absent rather than negative. The hospital results warn that the alarm alone changes nothing; the person who hears it does the work.

Bed alarms and dementia

Most nights, the person getting up is heading to the bathroom. In one US hospital study with data collected in 2002-03, 59% of falls happened in the evening or overnight, and among the 72 fallers aged 65 and over, 83% (60) were elimination-related (Hitcho et al., 2004). One hospital, small subgroup, but families recognise it.

A loud in-room alarm can frighten someone with dementia, so the usual advice is a silent pad linked to a pager in the caregiver's room. The Alzheimer's Association (US) says "six in 10 people living with dementia will wander at least once" and suggests a pressure-sensitive mat at the bedside or door (Wandering, Alzheimer's Association, accessed September 2026). This is a US figure from the Alzheimer's Association; we found no Canadian equivalent. The closest Canadian data, from interRAI home care assessments of 1.6 million long-stay home care clients in seven provinces and territories, measures something different: a 3.0% rate of critical wandering in the previous three days, among all home care clients rather than only those with dementia (Cruz et al., 2024).

Is a bed alarm a restraint? Opinions differ: in a survey of 289 nurses in 10 Japanese hospitals, 74% called bed alarms a form of physical restraint (Okumoto et al., 2020). In Ontario long-term care, the Fixing Long-Term Care Act, 2021 sets rules on restraining and on personal assistance services devices that limit or inhibit movement, at ss. 33 to 39, including s. 34.1 (Fixing Long-Term Care Act, 2021, Ontario e-Laws, consolidation current to 11 December 2025). Ask the home how it classifies the device. This is general information, not legal advice.

What should I check before buying?

• Who hears it? If nobody is awake and close, the alarm is only noise.
• Range. Will the pager reach your bedroom, or the garden?
• Shipping and duties. Confirm before ordering from a US vendor.

When is a room sensor the better tool?

A bed alarm answers one question: has she left the bed? A room sensor answers another: is there normal presence and movement in each room, day and night?

Consider one when nobody is awake nearby. An adult child across town cannot act on a beep at 3 am, but can see in the morning that there was movement in the bedroom and hallway several times overnight. Consider one when you want the pattern rather than each exit: no movement in the kitchen by 10 am tells you more than a buzzer does. And consider one when noise or a camera would be unacceptable, since a radar presence sensor makes no sound and records no images. See the indoor cameras with AI category for what a camera does instead, and the radar presence sensors category for what is sold in Canada without one.

A single-room pilot in the closed dementia unit of an Ottawa transitional care unit used bed-exit, motion and closet door sensors. It concluded that "implementation design needs as much attention as technology design" (Knoefel et al., 2022). The tool matters less than who responds.

We found no trial that has tested room sensors for falls at home either. Most families combine tools: a bed alarm for nights when a caregiver is in the house, a room sensor for the daily rhythm, a pendant for the call for help. None replaces a care plan. More in our technology hub, and in the medical alert pendants and watches category if the pendant is the piece you are still choosing.