What personal emergency response devices do, what Medicare and Medi-Cal will and won't cover, and the free County Fire lockbox families never hear about.
By Patricia Nguyen, CDP · September 04, 2026
A personal emergency response system, or PERS, is a button worn on the wrist or a neck cord that connects the wearer to a monitoring center. When pressed, an operator comes on a speaker and dispatches whoever is needed: a neighbor, an adult child, or 911. In-home units tie to a base station with limited range; mobile units add cellular service and GPS.
Be precise about what a button solves. It does not prevent a fall. What it does is shorten the time spent on the floor, and that interval is where much of the real harm accumulates — dehydration, pressure injury, and a fear of falling that lingers for months. Most families start shopping after a long lie has already happened once. Buying before that is the better move.
Original Medicare — Part A and Part B — does not cover medical alert systems. They are not classified as durable medical equipment, so any ad implying Medicare reimburses a monthly monitoring fee is describing something Original Medicare does not do.
Medicare Advantage varies by plan and by year. Some plans have offered a PERS device as a supplemental benefit, and several large carriers have been trimming that benefit rather than expanding it, so last year's answer may not hold. Call member services at the number on the back of the card, ask specifically whether a personal emergency response system is covered for the current plan year, and get it in writing. San Diego's HICAP counselors can read the plan's Evidence of Coverage with you without a sales pitch attached.
On the Medi-Cal side, personal emergency response services are among the services offered through the Multipurpose Senior Services Program, a home and community-based waiver for older Medi-Cal beneficiaries who would otherwise qualify for nursing facility care. Slots are limited and the program has been changing under CalAIM, so this is a call to make rather than a benefit to count on. Start with Aging & Independence Services at 800-339-4661.
Veterans should raise it with their primary care team or social worker at VA San Diego Healthcare System in La Jolla rather than a device salesperson, since whether a device can be issued depends on a clinical assessment. Also check any long-term care insurance policy in the file; some contracts include a safety-equipment allowance families never claim.
Here is the failure that catches families off guard. The button works, the monitoring center answers, paramedics arrive in minutes — and then stand at a locked front door with nobody inside able to reach it. What follows is a forced entry and a broken door at the homeowner's expense.
San Diego County Fire runs a free Residential KnoxBox program for exactly this. A small lockbox holding a spare house key is installed at the door and fire crews can open it in an emergency. It costs nothing and County Fire installs it. To qualify you must live in the San Diego County Fire service area or the Deer Springs Fire Protection District — much of the unincorporated backcountry, not the City of San Diego — and be 55 or older, have a disability, or need help with a major life activity. Apply online, or by email or mail to Community Risk Reduction; questions go to FireCRR@sdcounty.ca.gov or 858-226-0555.
Outside that service area, call your city's fire department non-emergency line and ask whether it runs a residential lockbox or key-holder program. Many do not, in which case the alternatives are a coded exterior key box recorded in the monitoring account file, or a trusted neighbor listed as a first responder contact. Either way, write the key location into the account.
One more local detail: text-to-911 has been available countywide since 2021 across all police, fire, and EMS agencies. Calling is still faster, but for someone hard of hearing, non-verbal, or unable to speak during a medical event, texting the location and nature of the emergency works. It is English-only and cannot carry photos.
The devices are broadly similar. The contracts are not, and that is where families get hurt. Ask how long the agreement runs and whether it renews automatically. Ask for the cancellation process in writing, including whether equipment must be returned and who pays shipping. Ask what the monthly fee covers and what is billed separately — activation, fall detection, a spare button, batteries.
Then ask the operational questions, which matter more than the hardware. Who does the center call first, and in what order? If nobody answers, does the operator go straight to 911? How often is the device tested, and who is notified if it stops reporting in? A button whose battery died four months ago is worse than none, because the family believes it works.
Be skeptical of high-pressure phone sales, anything sold door to door, and any pitch that opens by claiming Medicare will pay.
A medical alert system assumes the wearer can recognize an emergency and press a button. When that stops holding — advancing dementia, repeated falls, a pendant that lives on the nightstand — the honest conversation is about in-home caregiving hours, adult day programs, or a move to assisted living or memory care.
Aging & Independence Services at 800-339-4661 is a free starting point for assessment and referrals. If you are comparing licensed communities, inspection and complaint records for every licensed facility in the state are public at ccld.dss.ca.gov — read them before you tour, not after.
Free, no-pressure call. We work for families, not facilities.