Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards vs Aqara Temperature and Humidity Sensor T1 (Zigbee 3.0)
What separates them
These two differ on 8 recorded specifications. The Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards is ₹991 dearer.
Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards vs Aqara Temperature and Humidity Sensor T1 (Zigbee 3.0)
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 Temperature and Humidity Sensor T1 (Zigbee 3.0)
₹1,799
The reason to own one is not to read the temperature -- your phone will tell you that.
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 Temperature and Humidity Sensor T1 is for
Buy it if: Anyone already running a Zigbee hub who wants humidity or temperature to drive automations.
Avoid it if: Anyone without a hub, and anyone who only wants to see a number rather than act on it.
Specifications, side by side
8 of 18 rows differ. Differences first.
| Specification | Havells Smart Wi-Fi 4-Node Retrofit Module for Existing Switchboards | Aqara Temperature and Humidity Sensor T1 |
|---|---|---|
| Price | ₹2,790 | ₹1,799 |
| Battery life | Not applicable, mains powered | Approximately 2 years |
| Hub required | No -- Connects directly to the router | Yes -- Requires an Aqara hub, SmartThings, Home Assistant or another Zigbee coordinator |
| Local control | Partial. The existing physical switches keep working normally; app and voice control require internet | Yes. Readings and hub-side automations continue without internet access |
| 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 | Zigbee 3.0 |
| 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 and Home Assistant via the hub |
| Warranty | 1 Year Manufacturer Warranty | 1 Year Manufacturer Warranty |
| Channels | 4 independent | not published |
| Humidity accuracy | not published | Plus or minus 3 percent RH |
| Humidity range | not published | 0 to 100 percent RH |
| Installation | Behind the switch plate, licensed electrician recommended | not published |
| Load per channel | Up to 5 A | not published |
| Physical switches | Existing switches continue to work in parallel | not published |
| Reporting | not published | On change, roughly every 0.5 degrees C or 3 percent RH |
| Temperature accuracy | not published | Plus or minus 0.3 degrees C |
| Temperature range | not published | -20 to 60 degrees C |
Every row is a figure one or both products record. A blank is a figure the catalogue does not hold, not a zero.