Winner
Price unavailable right now
Data from the official Centralite and Heiman sites.
2026 verdict
Is a Zigbee hub already running in your home?
The Centralite Micro Door Sensor is the better fit of this pair, rated a touch higher than the Heiman Window Door Alarm and documented across more platforms, including SmartThings, Home Assistant, Wink and Vera. The Heiman Window Door Alarm counters with a lower price and no hub requirement at all, connecting straight to 2.4GHz Wi-Fi through the Smart Life app and adding a built-in 65 dB siren the Centralite lacks. Both are contact-only sensors with no motion, light or temperature sensing. Choose the Centralite Micro Door Sensor for an existing Zigbee hub household, and the Heiman Window Door Alarm if you want the cheapest way to get standalone Wi-Fi alerts with a local siren.
Works with
Connectivity
vs
Price unavailable right now
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Centralite Micro Door Sensor | Heiman Window Door Alarm | Winner |
|---|---|---|---|
| Rating | 4.1 | 4.0 | Centralite Micro Door Sensor |
| Integrations | Alexa, Samsung SmartThings, Home Assistant | Google Home, Alexa | Centralite Micro Door Sensor |
| Weather Resistance | NO | NO | Tie |
| Connectivity | Zigbee | 2.4 GHz WiFi | Tie |
| Sensors | Door & Window Open/Close | Door & Window Open/Close | Tie |
| Alerts | Door & Window Open/Close Alerts | Door & Window Open/Close Alerts | Tie |
What the differences mean
Hub requirement
The Centralite Micro Door Sensor is a Zigbee device that needs a hub such as SmartThings or Home Assistant, while the Heiman Window Door Alarm joins 2.4GHz Wi-Fi directly through the Smart Life app with nothing else to buy.
Platform reach
The Centralite Micro Door Sensor is documented as working with SmartThings, Wink, Vera, Qivicon and Home Assistant, plus Alexa through a Zigbee-hub Echo. The Heiman Window Door Alarm is confirmed only with Google Home and Alexa, with no SmartThings or Home Assistant support.
Built-in alarm
The Heiman Window Door Alarm carries a 65 dB siren on the sensor itself for a local, audible warning. The Centralite Micro Door Sensor has none, so any alarm has to come from whatever the hub triggers.
Battery information
The Heiman Window Door Alarm's replaceable CR2 cell is rated for about 2 years. The Centralite Micro Door Sensor uses a CR2450, but its expected battery life is not published, so budget to check it periodically rather than assume a figure.
Which one to buy if
- you already run a SmartThings, Wink or Home Assistant Zigbee hub
The Centralite Micro Door Sensor is built for exactly that lineup and needs no extra shopping to pair.
- you want a sensor that needs no hub at all
The Heiman Window Door Alarm connects directly over 2.4GHz Wi-Fi through the Smart Life app.
- you want a loud, local alarm right at the sensor
The Heiman Window Door Alarm has a built-in 65 dB siren; the Centralite Micro Door Sensor has none.
- you are replacing a discontinued Zigbee sensor and want a standard drop-in part
The Centralite Micro Door Sensor speaks standard Zigbee HA 1.2, which is exactly why it is documented across so many older hubs.
Winner
Price unavailable right now
- + Rating: 4.1
- + Integrations: Alexa, Samsung SmartThings, Home Assistant
Price unavailable right now
- - Rating: 4.0 vs 4.1
- - Integrations: Google Home, Alexa vs Alexa, Samsung SmartThings, Home Assistant
What owners say
Heiman Window Door Alarm owners mostly like how simple it is: no hub to buy, quick setup through the Smart Life app they may already use for other Tuya gadgets, and a built-in 65 dB siren for basic peace of mind. The recurring complaint is notifications: the app has no way to customize the alert sound or vibration, so a silenced phone can mean a missed alert, and a minority of owners say a unit stops notifying after a day or two or won't reconnect once removed and re-added.
Frequently Asked Questions
Which is better overall: Centralite Micro Door Sensor or Heiman Window Door Alarm?
The Centralite Micro Door Sensor, on a slightly higher rating and wider documented hub compatibility (SmartThings, Wink, Vera, Home Assistant). The Heiman Window Door Alarm is cheaper and needs no hub at all.
What is the biggest difference between the Centralite Micro Door Sensor and the Heiman Window Door Alarm?
Connectivity. The Centralite Micro Door Sensor is a Zigbee device that always needs a hub, while the Heiman Window Door Alarm connects directly to 2.4GHz Wi-Fi with nothing else required.
Is the Centralite Micro Door Sensor a motion sensor too?
No. Motion sensing is not supported on the Centralite Micro Door Sensor; it detects door and window open and close only, the same as the Heiman Window Door Alarm.
Does the Heiman Window Door Alarm need a hub?
No, and that is its main selling point. It joins your 2.4GHz Wi-Fi directly through the Smart Life app, while the Centralite Micro Door Sensor always needs a Zigbee hub.
Who should buy the Centralite Micro Door Sensor?
Anyone already running a SmartThings, Wink, Vera or Home Assistant Zigbee hub who wants a small, standard contact sensor to add to it.
Who should buy the Heiman Window Door Alarm?
Buyers who want the cheapest way to get a phone alert when a door or window opens, with no hub to set up and a built-in siren as a backup.
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