Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards vs Aqara Door and Window Sensor P2 (Thread, Matter Certified)
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.
Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards vs Aqara Door and Window Sensor P2 (Thread, Matter Certified)
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 →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 →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.
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.
Specifications, side by side
8 of 17 rows differ. Differences first.
| Specification | Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards | Aqara Door and Window Sensor P2 |
|---|---|---|
| Price | ₹2,790 | ₹2,290 |
| Battery life | Not applicable, mains powered | Approximately 2 years |
| Hub required | No -- Connects directly to the router | Yes -- Requires a Thread border router -- Apple HomePod mini, Apple TV 4K, Echo 4th gen, Nest Hub 2nd gen or Aqara Hub M3 |
| Local control | Partial. The existing physical switches keep working normally; app and voice control require internet | Yes. Matter over Thread is local by design; the controller runs automations without cloud involvement |
| Neutral wire | Required -- will not work in boards wired without a neutral at the switch | Not applicable |
| Power source | Mains, wired inside the switchboard | CR2032 coin cell |
| Protocol | Wi-Fi 2.4 GHz | Thread, Matter certified |
| Weather rating | IP20, enclosed in the switchbox | IP20, indoor use only |
| Works with | Amazon Alexa, Google Home, Havells Smart app | Apple Home, Alexa, Google Home, SmartThings -- any Matter controller |
| Warranty | 1 Year Manufacturer Warranty | 1 Year Manufacturer Warranty |
| Channels | 4 independent | not published |
| Gap tolerance | not published | Up to 22 mm between sensor and magnet |
| Installation | Behind the switch plate, licensed electrician recommended | not published |
| Load per channel | Up to 5 A | not published |
| Matter version | not published | Matter 1.2 certified |
| Physical switches | Existing switches continue to work in parallel | not published |
| Response time | not published | Under 1 second |
| Size | not published | Sensor 41 x 22 x 11 mm |
Every row is a figure one or both products record. A blank is a figure the catalogue does not hold, not a zero.