Aqara Door and Window Sensor P2 (Thread, Matter Certified) vs Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards
What separates them
These two differ on 8 recorded specifications. The Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards is ₹500 dearer.
Aqara Door and Window Sensor P2 (Thread, Matter Certified) vs Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards
Aqara
Aqara Door and Window Sensor P2 (Thread, Matter Certified)
₹2,290
The interesting thing here is not the sensor, which is a magnet and a reed switch, but the radio.
Full details →
Havells
Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards
₹2,790
Four circuits made smart for Rs2,790 works out cheaper per point than replacing switches or bulbs individually, and it keeps the wall switches your family already knows how to use.
Full details →Who the Aqara Door and Window Sensor P2 is for
Buy it if: Anyone with a Thread border router already in the house -- most recent Apple, Amazon and Google hub devices are one.
Avoid it if: Anyone without a Thread border router. Thread is a mesh with no route to your phone otherwise.
Who the Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards is for
Buy it if: Anyone with a modern switchboard that has a neutral wire and four circuits worth automating at once.
Avoid it if: Anyone in an older building with no neutral at the switch -- a no-neutral Zigbee module is the alternative.
Specifications, side by side
8 of 17 rows differ. Differences first.
| Specification | Aqara Door and Window Sensor P2 | Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards |
|---|---|---|
| Price | ₹2,290 | ₹2,790 |
| Battery life | Approximately 2 years | Not applicable, mains powered |
| Hub required | Yes -- Requires a Thread border router -- Apple HomePod mini, Apple TV 4K, Echo 4th gen, Nest Hub 2nd gen or Aqara Hub M3 | No -- Connects directly to the router |
| Local control | Yes. Matter over Thread is local by design; the controller runs automations without cloud involvement | Partial. The existing physical switches keep working normally; app and voice control require internet |
| Neutral wire | Not applicable | Required -- will not work in boards wired without a neutral at the switch |
| Power source | CR2032 coin cell | Mains, wired inside the switchboard |
| Protocol | Thread, Matter certified | Wi-Fi 2.4 GHz |
| Weather rating | IP20, indoor use only | IP20, enclosed in the switchbox |
| Works with | Apple Home, Alexa, Google Home, SmartThings -- any Matter controller | Amazon Alexa, Google Home, Havells Smart app |
| Warranty | 1 Year Manufacturer Warranty | 1 Year Manufacturer Warranty |
| Channels | not published | 4 independent |
| Gap tolerance | Up to 22 mm between sensor and magnet | not published |
| Installation | not published | Behind the switch plate, licensed electrician recommended |
| Load per channel | not published | Up to 5 A |
| Matter version | Matter 1.2 certified | not published |
| Physical switches | not published | Existing switches continue to work in parallel |
| Response time | Under 1 second | not published |
| Size | Sensor 41 x 22 x 11 mm | not published |
Every row is a figure one or both products record. A blank is a figure the catalogue does not hold, not a zero.
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