Accessory for Rhem · Fall detection

Halo

$80 USD / additional Halo

Halo adds camera-free fall detection to your Rhem. Mount it in the room you want to cover, with nothing for your parent to wear, press, or remember.

Requires a Rhem robot

Halo is an accessory and cannot be used on its own. One Halo is included free with every Rhem. Add more to your Rhem order for $80 each.

Choose Rhem & add Halos

Installation & coverage

Rated coverage is up to 19 m² at a 3 m ceiling height, or 12 m² with wall mounting at 1.6 m. Configure the detection boundaries around your space and keep the person’s full body within the area. Halo requires a Rhem robot, a 12 V power adapter, and 2.4 GHz Wi-Fi.

See placement & coverage

Delivery & returns

Pre-order · Estimated to ship January 20–31, 2027.
Orders ship in the order they’re received. Cancel anytime before shipment for a full refund.

Ships to US. Free standard shipping.

Your 30-day return window begins on delivery, subject to our return conditions. We’ll send regular production and shipping updates by email.

Delivery policy Return policy

Warranty & support

Each device includes a one-year limited hardware warranty. Our team can help with product, setup, and order questions.

Warranty details Talk to our team

Halo at home — wide room photograph — AI-powered fall detection.
Next-generation mmWave radar and advanced AI help Halo detect falls accurately and reduce the chance of one going unnoticed.

Halo in the bathroom — wide interior photograph — Care that respects their privacy.
Halo uses radar to detect movement, even in complete darkness. It never captures images or video, so private spaces like bedrooms and bathrooms stay private.

Halo up close — portrait detail — Care that respects their privacy.
Halo uses radar to detect movement, even in complete darkness. It never captures images or video, so private spaces like bedrooms and bathrooms stay private.

Always on. Nothing to wear.
Halo monitors for falls around the clock, with nothing to wear or press. Get alerts in the Rhem app, see each event’s start time, end time and duration, and follow daily reports and monthly fall counts.

	Traditional pendant	Rhem Halo
Have to wear it?	Yes. Every day.	No.
How does it send an alert?	They need to press the button.	Detects falls automatically.
What if im Too hurt to press?	No press, No alert.	24/7 automatic detection
Is it ugly?	Yes	No

Halo requires a Rhem robot and cannot be used on its own. Pendant features vary by model and plan; image is illustrative. Halo’s rated coverage assumes a 3 m ceiling mount or 1.6 m wall mount. Configured boundaries and room layout affect usable coverage. Halo alerts family, not an emergency response center. Pendant reference.

Wall mount detection coverage

Wall mount detection coverage dimensions
Mounting height	Depth	Width	Detection area
1.6 m	4 m	3 m	12 m²

Mount on a stable wall, with a clear view of the detection area.

Ceiling mount detection coverage

Ceiling mounting height, radius and illustrated detection area
Mounting height	Radius	Illustrated area
3 m	2.51 m	19.78 m²
2.5 m	2.09 m	13.71 m²
2.2 m	1.84 m	10.63 m²
2 m	1.67 m	8.75 m²

Areas shown follow the installation diagram. Rated ceiling coverage is up to 19 m².

Illustrations are not to scale. Keep the person’s full body within the configured detection area. Mounting height, boundaries and obstructions affect usable coverage.

What arrives

Halo, mounting bracket, fixing adhesive, user manual, and a 12 V / 1 A power adapter.

One Halo is included free with your Rhem robot. Each additional Halo is $80 and comes with its own mounting and power accessories. All Halos require Rhem to work.

Specifications

Compatibility: Requires a Rhem robot; cannot be used on its own
Radar: Millimetre-wave radar
Ceiling coverage: Rated up to 19 m² at 3 m mounting height; about 13.7 m² at 2.5 m
Wall coverage: Rated up to 12 m² (4 × 3 m) at 1.6 m mounting height
Detection angle: Beam azimuth ±80°; elevation ±60°
Power: DC 12 V; device current ≤0.2 A; 12 V / 1 A power adapter
Connectivity: 2.4 GHz Wi-Fi; RS485 hardware interface
Dimensions: 95 mm diameter × 32 mm tall
Operating temperature: Sensor rated −40 °C to +70 °C
Operating humidity: Sensor rated ≤95%, non-condensing
Mounting: Stable ceiling or wall; configurable detection boundaries

FAQ

Does Halo need a Rhem?

Yes. Halo is an accessory for the Rhem robot and cannot be used on its own. One Halo is included free with every Rhem. Add more Halos to your Rhem order for $80 each.

Can I buy Halo by itself?

Halo is available as an accessory with a Rhem robot, not as a standalone device. Choose your Rhem, then add any extra Halos you need for $80 each. Your first Halo is included free.

Is there a camera inside?

No. Radar reads shape and motion as reflected signal, never a picture. There is no camera and no microphone. It works in the dark and records no images.

Where should I put Halo in a bathroom?

Choose a stable, dry ceiling or wall position with a clear view of the floor area you want to monitor, outside direct spray and condensation. The sensor is rated for up to 95% humidity, non-condensing. Contact our team to check a position above or near a shower before installation.

What happens when someone falls?

When Halo detects a fall within its configured area, it sends an alert to the Rhem family app. Each recorded event includes its start time, end time and duration, so you can check in and look back at what happened. Alert delivery depends on power, network connectivity and phone notification settings.

Does one Halo cover an entire room?

Ceiling coverage is rated up to 19 m² (about 204 sq ft) at a 3 m mounting height. At 2.5 m, the manual lists about 13.7 m² (147 sq ft). Wall mounting at 1.6 m is rated up to 12 m² (129 sq ft). The person’s full body must be within the configured detection area. Height, boundaries, room layout and obstructions affect usable coverage; larger or irregularly shaped rooms may need additional devices.

What do I need before installing it?

A Rhem robot, a stable ceiling or wall position, an outlet for a 12 V / 1 A power adapter, and 2.4 GHz Wi-Fi. Recommended mounting heights are 3 m (9.8 ft) on a ceiling or 1.6 m (5.2 ft) on a wall. Select the matching installation mode and set the height and detection boundaries during setup. A 5 GHz-only Wi-Fi network is not suitable.

Can I adjust the detection area?

Yes. Halo supports ceiling and wall installation modes with configurable mounting height and detection boundaries. Set the monitored area around the space you want to cover, keeping the person’s full body inside that area and the radar’s view clear.

What can affect coverage?

Mounting height, installation mode, configured boundaries and room layout affect the area Halo can monitor. Install it on a stable surface and avoid obstructions, especially metal objects. Contact our team for help planning an unusual room layout.

Which app does it use?

Halo works with your Rhem robot and the Rhem family app, using 2.4 GHz Wi-Fi. Alongside fall alerts, you can see each event’s start time, end time and duration. Daily reports group falls into morning, afternoon and night, and show fall counts over the past month to help you understand when falls happen more often.

When am I charged?

The full device price is charged when you order. There is no later hardware balance. Email support@rhem.ai to cancel before shipment for a full refund.

When will it ship?

See the shipping information shown before payment for the dispatch estimate. We will email you if that estimate changes, with the option to agree to the delay or cancel for a full refund.

Halo is a safety companion, not a certified medical device or an emergency response service. It is built for awareness and for reaching family faster.

Halo

How many do I need?

Check the area one Halo can cover.

You’ll need Rhem, power and Wi-Fi.

What’s holding you back?

AI-powered fall detection.

Care that respects their privacy.

Always on. Nothing to wear.

Halo vs. a pendant.

Wall mount detection coverage

Ceiling mount detection coverage

What arrives

Specifications

FAQ