Keryx Wristband
Help is one press away, even where phones don't work.
Keryx Wristband is a waterproof wearable for swimmers and guests that puts a distress alert — with the wearer's live location — in front of lifeguards and venue staff within seconds, over a private on-site network that needs no phone signal. When a rescue outgrows the venue, the same alert becomes an incident in Keryx.
What it does
Drowning is quiet. A person in trouble in the water rarely shouts, and a lifeguard scanning a crowded pool or a long stretch of beach is looking for a signal that may never come. Guests cannot reach for a phone — it is in a locker, or it would not survive the water, or the beach has no coverage to begin with. The gap between the moment someone needs help and the moment anyone knows is where the danger lives.
Keryx Wristband closes that gap with a band, a network, and a screen. The wearer presses once. The band sends the alert over a low-power mesh that the venue owns and that works without cellular or Wi-Fi, and within seconds the nearest lifeguards see who needs help and exactly where they are — on a handheld, a watch, or the operations dashboard. Zones can be drawn so that a child's band crossing into deep water raises the same alert without anyone pressing anything. And because it is part of Keryx, a venue that needs paramedics does not pick up a phone and explain: it escalates, and the emergency centre receives the location and the timeline as structured data.
Capabilities
One press, everyone who matters knows
A single press on the band raises an alert carrying the wearer's identity and live position. Lifeguards on duty receive it on their own devices, the operations dashboard lights the location, and the response clock starts.
Location without cellular
Bands talk to a private low-power mesh installed across the venue, so alerts and positions flow in pools, on beaches, and at marinas with no phone signal at all. Position is derived from the mesh itself, indoors and out.
Zones with rules of their own
Draw geofences for the deep end, the swim boundary, a closed area, or a children's zone. A band crossing a line it should not raises an alert automatically, and a child's band removed from the wrist does the same.
Built to be worn in the water all day
Sealed against immersion, tested in chlorine and salt water, with a battery that lasts days and a magnetic dock for charging between shifts. Sized for adults and children, light enough to forget it is on.
An operations view of the whole venue
Every active band on a map with battery and signal health, live alerts with who has acknowledged and who is responding, and response timelines that become the record for shift handover and incident review.
Escalates straight into Keryx
When a venue response needs an ambulance, one action opens an incident in Keryx Dispatch with the wearer's location and the alert timeline attached. The emergency centre gets structured data, not a breathless phone call.
Standards and interoperability
Built on the open specifications the emergency services community has already agreed on, so it connects to what you run today and what your network is migrating toward.
- IP68
- Designed to the ingress rating for sustained immersion, and tested in chlorinated and salt water rather than just fresh.
- Low-power mesh
- Bands and gateways form a private radio mesh across the venue, independent of cellular and Wi-Fi coverage.
- CE / FCC / RoHS
- Radio, safety, and materials compliance targeted for the markets the hardware ships to.
- GDPR
- Wearer data is minimised, retained only as long as the venue's policy requires, and handled with the additional care children's data demands.
- EIDO
- Escalated alerts are handed to Keryx Dispatch as structured incident data in the Emergency Incident Data Object format.
- Open API
- Alerts, positions, and device health are available to the venue's own systems — access control, guest management, or a third-party dashboard.
Why centres choose it
— Seconds, not a search
Response is measured from the press to the lifeguard's arrival, not from the moment someone happened to notice. The band removes the first and longest delay in a water rescue.
— Works where phones don't
The venue owns the network. There is no carrier to depend on, no dead zone at the far end of the beach, and no guest who left their phone in the locker.
— The venue and the emergency centre see one event
Because escalation flows through Keryx, the lifeguard's alert, the venue's response, and the ambulance dispatch sit on a single timeline — one record from the first press to hand-over.
Part of the Public Safety suite
Put a band on your wrist and press it.
We will set up a small mesh at your venue, hand out bands to your team, and time the response from press to arrival — then show you the same alert landing in Keryx Dispatch.