Updated September 2026
Data from Amazon and official Ecobee and Meross sites.
2026 verdict
A thermostat helper against a general climate sensor: as a temperature and humidity sensor, the Meross Smart Temperature and Humidity Sensor is the one to buy.
It reads humidity as well as temperature, raises humidity alerts, keeps history records and runs automations, and its solar-assisted cell means the battery is rarely a concern. The Ecobee SmartSensor is built for a different job: it measures temperature and occupancy so an ecobee thermostat can balance rooms, with no humidity reading and no automations of its own. It also earns a 3 year warranty and a five year battery rating. The catch on the Meross side is a required Meross Smart Wi-Fi Hub, while the Ecobee SmartSensor only pairs with ecobee thermostats. Buy the Ecobee SmartSensor if you already own an ecobee thermostat, and the Meross Smart Temperature and Humidity Sensor for everything else.
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| Feature | Ecobee SmartSensor | Meross Smart Temperature and Humidity Sensor | Winner |
|---|---|---|---|
| Price | $98.20 | $14.99 | Meross Smart Temperature and Humidity Sensor |
| Rating | 4.6 | 3.6 | Ecobee SmartSensor |
| Warranty | 3 years | 1 year | Ecobee SmartSensor |
| Battery Life | 5 years | Lifetime | Meross Smart Temperature and Humidity Sensor |
| Alerts | Temperature Alerts | Temperature Alerts, Humidity Alerts | Meross Smart Temperature and Humidity Sensor |
| Connectivity | Other | Other | Tie |
| Screen | NO | NO | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant | Tie |
| Sensors | Temperature, Occupancy | Temperature, Humidity | Tie |
What the differences mean
Humidity reading
The Meross Smart Temperature and Humidity Sensor measures humidity and alerts on it, so it can run a dehumidifier or humidifier. The Ecobee SmartSensor reads only temperature and occupancy, which is enough for a thermostat but not for a damp basement.
What it works with
The Ecobee SmartSensor is an accessory for ecobee thermostats and cannot serve as a standalone sensor in a wider smart home. The Meross lists Alexa, Google Home, Apple HomeKit, SmartThings and Home Assistant, though only through its own hub.
Hub requirement
The Meross needs a Meross Smart Wi-Fi Hub within sub-1 GHz range, an extra purchase and another device to place. The Ecobee SmartSensor talks to its thermostat over a 915 MHz radio, so an ecobee owner has no extra hardware to add.
Battery
The Ecobee SmartSensor runs on a CR2477 rated for about 5 years. The Meross is listed with lifetime battery life thanks to solar assist, so replacements matter less. Neither is a chore, but the Meross is the lower maintenance one.
Occupancy
Only the Ecobee SmartSensor detects occupancy, which is what lets a thermostat skip empty rooms. The Meross does not sense presence, so it cannot do that job.
Which one to buy if
- you want to trigger a fan or humidifier from humidity readings
The Meross Smart Temperature and Humidity Sensor measures humidity, alerts on it and keeps history, while the Ecobee SmartSensor has no humidity reading.
- you already own an ecobee thermostat with a hot or cold room
The Ecobee SmartSensor adds temperature and occupancy readings the thermostat can average or prioritize.
- your smart home runs on Apple Home and you want climate automations
The Meross works with Apple HomeKit and lists automations, provided you add its Smart Wi-Fi Hub.
- you do not want to buy an extra hub
The Ecobee SmartSensor pairs straight to an ecobee thermostat, though only if you already own one.
- + Rating: 4.6
- + Warranty: 3 years
- - Price: $98.20 vs $14.99
- - Battery Life: 5 years vs Lifetime
Winner
- + Price: $14.99
- + Battery Life: Lifetime
- + Alerts: Temperature Alerts, Humidity Alerts
- - Rating: 3.6 vs 4.6
- - Warranty: 1 year vs 3 years
What owners say
Owners of both sensors like how little there is to do once they are running: quick pairing, no display to fuss over and very few battery changes. Ecobee SmartSensor owners single out the comfort payoff, saying the thermostat finally averages rooms or follows the occupied one instead of reading only the hallway, and they mention pairing in minutes. Their complaints are a price that feels high for a small puck, spotty range from a bedroom to a thermostat two floors away and the occasional unit that needed a swap. Meross Smart Temperature and Humidity Sensor owners talk about HomeKit automations that switch on a fan or humidifier at a threshold and about never replacing a battery. They warn about the mandatory hub, sub-1 GHz range that falls short through walls and units that dropped off the hub after weeks or months.
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.
- Ecobee SmartSensor
- Meross Smart Temperature and Humidity Sensor
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Frequently Asked Questions
Which is better overall: Ecobee SmartSensor or Meross Smart Temperature and Humidity Sensor?
The Meross Smart Temperature and Humidity Sensor, as a sensor in its own right: it reads humidity, alerts on it and runs automations. The Ecobee SmartSensor is the better fit only when you own an ecobee thermostat and want it to balance rooms.
What is the biggest difference between the Ecobee SmartSensor and the Meross Smart Temperature and Humidity Sensor?
Purpose. The Ecobee SmartSensor is a thermostat accessory that senses temperature and occupancy, while the Meross Smart Temperature and Humidity Sensor is a standalone climate sensor for temperature and humidity that needs a Meross Smart Wi-Fi Hub.
Does the Ecobee SmartSensor measure humidity like the Meross Smart Temperature and Humidity Sensor?
No. The Ecobee SmartSensor measures temperature and occupancy only, while the Meross Smart Temperature and Humidity Sensor measures both temperature and humidity.
Do the Ecobee SmartSensor and the Meross Smart Temperature and Humidity Sensor work with Apple HomeKit and Home Assistant?
Both list Apple HomeKit, Alexa, Google Home, SmartThings and Home Assistant, and neither supports Matter. The Meross Smart Temperature and Humidity Sensor gets there through a Meross hub, while the Ecobee SmartSensor works through an ecobee thermostat.
Who should buy the Ecobee SmartSensor?
Ecobee thermostat owners whose house has a room that runs hot or cold, who value occupancy detection, a long battery rating and a 3 year warranty.
Who should buy the Meross Smart Temperature and Humidity Sensor?
Anyone who wants humidity and temperature alerts for fans, humidifiers or HVAC, especially in Apple Home, and who does not mind adding a Meross Smart Wi-Fi Hub.
Full comparison table
Compare all 34 Temperature & Humidity Sensors side by side
You are looking at two of them. The full table lines up all Temperature & Humidity Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 34 Temperature & Humidity Sensors
- 43 specs compared
- 39 filters
YoLinkSmart Wireless Thermometer Hygrometer
10% OFF$16.14$14.48
GoogleNest Temperature Sensor
$39.00- Ecobee
SmartSensor
$98.20 
SwitchBotMeter Pro
$19.99
SwitchBotMeter Plus
15% OFF$17.99$15.29
GoveeHygrometer Thermometer H5104
$13.99
AeotecMultipurpose Sensor
$38.99
X-SenseSmart WiFi Indoor Thermometer
23% OFF$14.99$11.49
X-SenseSTH0B Smart Thermometer Hygrometer
23% OFF$14.99$11.49
GoogleNest Temperature Sensor (2nd gen)
$39.98
SonoffSNZB-02DR2 AirGuard TH
$14.90
SonoffSNZB-02WD
$19.90
SonoffSNZB-02M AirGuard TH Pressure Sensor
$19.90
ShellyBLU H&T ZB
$22.99
ShellyBLU H&T Display ZB
$25.99
SensiEmerson Room Sensor
$45.88
SwitchBotMeter
$13.99
SwitchBotIndoor/Outdoor Thermo-Hygrometer
15% OFF$14.99$12.74
AqaraTemperature and Humidity Sensor
$19.98
SonoffLCD Smart Temperature Humidity Sensor
$15.90
Air Quality MonitorsEcobeeSmart Thermostat Premium
4.5(858)27% OFF$204.97$149.63
CamerasEcobeeSmartCamera
4.0(1,324)9% OFF$99.99$90.67
DoorbellsEcobeeSmart Doorbell Camera
4.1(1,067)31% OFF$159.99$109.99
Door & Window SensorsEcobeeSmartSensor for Doors & Windows
4.2(1,284)$59.89- Temperature & Humidity SensorsEcobee
SmartSensor
4.6(8,751)$98.20 
ThermostatsEcobeeSmart Thermostat Enhanced
4.4(3,708)8% OFF$199.99$184.97
ThermostatsEcobeeSmart Thermostat Essential
4.2(1,887)$139.00
ThermostatsEcobeeSmart Thermostat Premium
4.5(858)27% OFF$204.97$149.63
Door & Window SensorsMerossSmart Door and Window Sensor
3.0(35)18% OFF$21.99$17.99
Energy MonitorsMerossEM06P
4.2(143)
Energy MonitorsMerossEM16P
4.3(46)20% OFF$199.99$159.98
Garage Door OpenersMerossMSG100 Smart Garage Door Opener
4.2(6,692)15% OFF$49.99$42.49
HubsMerossMatter Smart Hub Pro MSH450P
14% OFF$34.99$29.99
HubsMerossSmart Wi-Fi Hub MSH400HK
4.4(45)
HubsMerossSmart Wi-Fi Hub MSH450
4.2(192)€24.99
LED BulbsMerossSmart Wi-Fi LED Bulb
4.0(793)$17.04
LED BulbsMerossSmart Wi-Fi LED Bulb with Dimmable Light
4.2(340)$44.64
PlugsMerossMatter Smart Plug Mini
4.2(212)$17.99
PlugsMerossOutdoor Smart Plug (3 Sockets)
4.4(4,756)10% OFF$30.99$27.89
PlugsMerossOutdoor Smart Plug
4.4(3,954)$25.99
PlugsMerossSmart Wi-Fi Plug
4.3(3,154)$21.99
Presence SensorsMerossPresence Sensor MS605
3.1(88)6% OFF$27.59$25.99
Presence SensorsMerossSmart Presence Sensor
3.8(119)$33.99
Radiator ValvesMerossSmart Thermostat Valve
3.8(980)€28.41
RelaysMerossMatter Smart DIY Switch with Energy Monitor
4.4(2,764)€19.99- Temperature & Humidity SensorsMeross
Smart Temperature and Humidity Sensor
3.6(86)$14.99 
ThermostatsMerossMTS300 Smart Thermostat
3.8(835)5% OFF$62.99$59.84
Water Leak SensorsMerossSmart Water Leak Sensor
3.7(41)$23.99