Smart Temperature and Humidity Sensor
  • Monitor temperature and humidity via Meross app anywhere anytime, such as baby's room, refrigerators, basement, etc.
  • Get instant alerts when the temperature and humidity exceeds your preset values. Protect the people or things you care about.
  • Compact size(1.57 x 1.57 x 0.55 in.), thread for fixation, with long range connection(10 ft typical), you can deploy the device easily. 
  • Works with IFTTT. When get alerts, trigger my Philips bulb to flash. (You can trigger meross bulb to flash, too.)
  • View or simply extract the history data, to analyze how those data affect your life.
  • Meross hub is required for the connection.


                               Hardware Features-

Temperature Range 

-10°C~50°C (14°F~122°F

Humidity Range


(Prolonged exposure to >80% RH may create an offset of up to 3% in the readings. 

 This effect gradually reverses after return to <80% RH conditions.)

CR2477, typical over 1 year life

1 x Reset button

Insert a pin into the hole and hold for 5 seconds to initiate factory reset process

1 x Status LED
Dimensions (W x D x H)
1.57 x 1.57 x 0.55 in. or 40 x 40 x 14 mm
25g or 0.9 oz

Temperature Accuracy

(0°C~40°C / 32°F~104°F)

±0.3°C / ±0.5°F typical, ±0.5°C / ±0.9°F maximum

Temperature Accuracy

(Full Range)                                       

±0.7°C / ±1.3°F typical, ±1.2°C / ±2.2°F maximum

Humidity Accuracy

(@25°C / 77°F from 20% ~80%) 

±3.0% typical, ±4.5% maximum

Humidity Accuracy

(@25°C / 77°F from 0% ~100%) 

±4.5% typical, ±7.5% maximum

                                   Wireless Features-

Wireless Standard  




Package Contents
1 x Smart sensor

1 x CR2477 battery

1 x User manual

1 x Double-sided adhesive tapes

1 x Thread

System Requirements
Smartphone running iOS 9 or higher, Android 4.1 or higher

Existing Wi-Fi network

Meross smart hub


Storage Temperature: -40°C~70°C (-40°F~158°F)

Storage Humidity: 0%~100%­



                                                  1. How many smart home devices can the Meross app control?

                                                  2. Can my Meross smart home devices be controlled by multiple phones?

                                                  3. Do Meross smart home devices retain the selected settings if it encounters a power outage?

                                                  6. What should I do if my smart home device time doesn't match the real time?

                                                  7. How do I control Smart Devices by Amazon Echo/Dot/Tap with voice commands?

                                                  9. Why I didn't find my device on "Select a Device Page" in Meross app?

                                                  10. Do my Meross smart devices support Campus, Hotel, Airport or Shopping Mall WiFi Hotspots?

                                                  14. How to make my Meross devices work with IFTTT?

                                                  15. Do Meross devices work with my Fritz!Box?

                                                  40. How many MS100 does one Meross Smart Hub support?