Live nowPrime Day 2026October 6 to 7, 2026Starts in--d--h--m--sSee the deals
Smoke & CO Detectors · Head to head

Heiman HS1SA-E Zigbee Smoke Alarm vs X-Sense WiFi Smoke & CO Detector

Full Smart Smoke & CO Detectors comparison in 2026

Updated October 2026
Data from Amazon and official Heiman and X-Sense sites.
2026 verdict
Tiny smoke sensor or combo alarm? The X-Sense WiFi Smoke & CO Detector wins this pairing because it watches for carbon monoxide as well as smoke.
X-Sense WiFi Smoke & CO Detector
Winner
X-Sense WiFi Smoke & CO Detector
€33.58€39.9916% OFF
Buy on Amazon GermanyCheck price
It combines both sensors in one unit, shows readings on an LCD, connects directly to 2.4 GHz Wi-Fi for phone alerts and carries a 5-year warranty. The Heiman HS1SA-E Zigbee Smoke Alarm takes the smart home side: once paired to a Zigbee hub it works with Samsung SmartThings and Home Assistant and can trigger automations, and at 60 x 60 mm it is far more discreet than the 144 mm X-Sense disc. It detects smoke only, though, and needs that hub before it can alert your phone. Pick the X-Sense WiFi Smoke & CO Detector to cover smoke and CO with one hub-free device, and the Heiman HS1SA-E Zigbee Smoke Alarm for an inconspicuous Zigbee smoke sensor in an existing SmartThings or Home Assistant home.
vs
Deals by email

Smoke & CO Detector prices change while you decide

We follow prices across the catalog and email you the best deals we find.

Smart home deals and news, straight to your inbox

Price drops, new releases and the smart home news worth knowing.

No spam. Unsubscribe in one click.

Your subscription could not be saved. Please try again.
Please enter a valid email address.
Your subscription has been successful.
FeatureHeiman HS1SA-E Zigbee Smoke AlarmX-Sense WiFi Smoke & CO DetectorWinner
Price€34.99€33.58X-Sense WiFi Smoke & CO Detector
Battery Life5 years1 yearHeiman HS1SA-E Zigbee Smoke Alarm
IntegrationsSamsung SmartThings, Home AssistantHome AssistantHeiman HS1SA-E Zigbee Smoke Alarm
ScreenNOYESX-Sense WiFi Smoke & CO Detector
SensorsSmokeSmoke, COX-Sense WiFi Smoke & CO Detector
AlertsFire Alerts, Low Battery AlertsFire Alerts, CO Alerts, Low Battery AlertsX-Sense WiFi Smoke & CO Detector
Rating4.54.5Tie
ConnectivityZigbee2.4 GHz WiFiTie
Built-in SirenYESYESTie
Built-in LightYESYESTie
Tests ItselfNONOTie
PathlightNONOTie

What the differences mean

Carbon monoxide

The X-Sense WiFi Smoke & CO Detector senses carbon monoxide as well as smoke. The Heiman HS1SA-E Zigbee Smoke Alarm is smoke only, so a home with gas appliances would still need a CO alarm next to it.

Hub or Wi-Fi

The Heiman HS1SA-E Zigbee Smoke Alarm uses Zigbee and needs a hub like SmartThings or Home Assistant for alerts and automations. The X-Sense WiFi Smoke & CO Detector connects to Wi-Fi directly and alerts your phone from its own app.

Size

At 60 x 60 mm the Heiman HS1SA-E Zigbee Smoke Alarm almost disappears on a wall. The X-Sense WiFi Smoke & CO Detector is 144 x 144 mm, a much larger disc that owners say needs some thought about where it goes.

Display and warranty

The X-Sense WiFi Smoke & CO Detector has an LCD and a 5-year warranty. The Heiman HS1SA-E Zigbee Smoke Alarm has no screen, and Heiman publishes no warranty term for it.

Which one to buy if

What owners say

Both groups describe installation as simple and the siren as properly loud. Heiman HS1SA-E Zigbee Smoke Alarm owners are struck by how loud it is for its size and like that it can be stuck on with an adhesive pad in bedrooms, hallways and motorhomes; their complaints centre on the battery, which some found short of the rated five years and hard to replace with the exact cell. X-Sense WiFi Smoke & CO Detector owners bought it to cover smoke and carbon monoxide from one unit near stoves and heating systems, and single out the readable LCD, app alerts across several rooms and fast warranty replacements. Their gripes are its size, bigger than a standard smoke alarm, and a mounting bracket that is awkward to align level.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Heiman HS1SA-E Zigbee Smoke Alarm
  • X-Sense WiFi Smoke & CO Detector

Loading price history...

Frequently Asked Questions

Which is better: Heiman HS1SA-E Zigbee Smoke Alarm or X-Sense WiFi Smoke & CO Detector?

The X-Sense WiFi Smoke & CO Detector for most homes, since it detects smoke and carbon monoxide, has an LCD, needs no hub and has a 5-year warranty. The Heiman HS1SA-E Zigbee Smoke Alarm is the better fit for a discreet Zigbee smoke sensor in SmartThings or Home Assistant.

What is the biggest difference between the Heiman HS1SA-E Zigbee Smoke Alarm and the X-Sense WiFi Smoke & CO Detector?

Carbon monoxide detection. The X-Sense WiFi Smoke & CO Detector has both a smoke and a CO sensor, while the Heiman HS1SA-E Zigbee Smoke Alarm detects smoke only.

Does the Heiman HS1SA-E Zigbee Smoke Alarm work without a hub?

It works as a standalone alarm with its built-in siren, but phone alerts, SmartThings, Home Assistant and automations all need a Zigbee hub. The X-Sense WiFi Smoke & CO Detector connects over Wi-Fi instead, so it needs no hub.

Do either of these alarms work with Alexa or HomeKit?

No. The Heiman HS1SA-E Zigbee Smoke Alarm works with SmartThings and Home Assistant through a Zigbee hub, and the X-Sense WiFi Smoke & CO Detector lists Home Assistant only. Neither supports Alexa, Apple HomeKit or Matter.

Who should buy the Heiman HS1SA-E Zigbee Smoke Alarm?

Anyone who wants a small, loud smoke alarm for a bedroom, hallway or campervan, or a low-profile Zigbee smoke sensor for SmartThings or Home Assistant. Owners of the Heiman HS1SA-E Zigbee Smoke Alarm advise keeping an eye on the battery rather than counting on years of maintenance-free use.

Full comparison table

Compare all 25 Smoke & CO Detectors side by side

You are looking at two of them. The full table lines up all Smoke & CO Detectors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 25 Smoke & CO Detectors
  • 44 specs compared
  • 41 filters
Open the full comparison
More Smoke & CO Detectors

Top Smoke & CO Detectors to compare next

25 smart smoke and CO detectors from 9 brands compared: X-Sense, First Alert, Kidde, Google Nest and more. Sensor types, interlink and alerts.

All Smoke & CO Detectors
Heiman

More Heiman products

A sharper look at other Heiman products worth comparing.

Explore Heiman
X-Sense

More X-Sense products

A sharper look at other X-Sense products worth comparing.

Explore X-Sense
Independent · Not sponsoredBrands never pay for placement or rankings. Affiliate commissions never influence our comparisons.
© 2026 Smart Home Compared
Search