• MS100F-1
  • MS100F-2
  • MS100F-3
  • MS100F-4
  • MS100F-5
  • MS100F-6
  • MS100F-8
  • MS100F-9

Smart Temperature and Humidity Sensor

  • Works with Apple HomeKit, Amazon Alexa, Google Assistant, and SmartThings.
  • Battery Replacement-Free for Life: Ambient microlight collection, enabling a lifetime of battery-free replacement.
  • Remote Monitoring: Monitor environmental temperature and humidity changes anytime, anywhere (with internet connectivity).
  • Precision Detection: Built-in 4th generation Swiss-made high-precision sensor.
  • Multi-Scenes: Monitor temperature and humidity via the Meross app anywhere anytime, such as baby's room, refrigerators, basement, etc.
  • Real-time Alert Notifications: Receive instant notifications through our dedicated app when the temperature and humidity levels surpass your predefined thresholds.
  • Devices Automation: Set temperature and humidity conditions to trigger Meross device automation, such as the on/off of plugs, lights, and switches.
  • 2-Year Data Storage & Export: View and export temperature and humidity data for the past 2 years using the Meross app.
  • *The MS100F temperature and humidity sensor is only compatible with the MSH300 HomeKit hub, version 4.5.x or above.
Temperature Range
  • -10℃~50℃ / 14℉~122℉
  • (±1°C accuracy within 0-40°C, ±2°C outside that range.)
Temperature Accuracy
  • 0.3℃ / 0.54℉
Humidity Range
  • 0~95%
  • (±5% accuracy within 50-80% RH, ±10% outside that range.)
Humidity Accuracy
  • 5%
Power Supply
  • Solar: Solar power is activated when the ambient light intensity reaches 150 Lux. (No battery power is consumed)
  • Battery: CR2477
Supply Voltage
  • Sensor: 2.6-3.6V
  • Hub: 5V,1A
  • 1 x Status LED
  • 1 x Reset Button
  • (Insert a pin into the hole and hold for 5 seconds to initiate factory reset process.)
Dimensions (W x D x H)
  • Sensor: 2.2 x 2.2 x 0.73 in. / 56 x 56 x 18 mm
  • Hub: 2.32 x 1.61 x 0.83 in. / 59 x 41 x 21 mm
  • Sensor: 40g / 1.4oz
  • Hub: 0.88oz
Wireless Standard
  • Hub:802.11 b/g/n 2.4GHz Wi-Fi
  • Between hub and sensor: 433MHz
  • US: FCC, IC
  • EU: CE, RoHS, WEEE
Package Contents
  • 1 x Smart Sensor
  • 1 x CR2477 Battery(Within the device)
  • 1 x User Manual
  • 1 x Double-sided Adhesive Tapes
  • 1 x Pin
  • MS100FH Only:
  • 1 x Smart Hub
  • 1 x USB Cable
  • 1 x Power Adapter
System Requirements
  • Smartphone running iOS 13 or later, Android 6.0 or later Existing Wi-Fi network.(Smart Hub)
  • Storage Temperature: -40°C~70°C (-40°F~158°F)
  • Storage Humidity: 0%~100%­
Does the black screen show anything?

The black screen on the device is a solar panel that can collect energy from ambient light to power the sensor. It is not an LCD screen and won't display any content.

What are the operating conditions for the solar battery panel?

According to the test results conducted by the Meross laboratory, the solar panel will start operating when the ambient light reaches approximately 350 Lux, and it will remain stable during operation with a minimum requirement of 150 Lux. During operation, as long as the ambient light is sufficiently bright, the solar panel will provide energy to the sensor without consuming any battery power. 

Please refer to the following illumination intensities for common scenarios:


How many devices does a Meross Smart Hub support?

A Meross Smart Hub can support up to 16 devices.


I see that Meross has several products (sub-devices) that use the Hub, can these products (sub-devices) share one Hub?

Yes, you can. Specifically, the following.
If you are using the HomeKit version of the Hub (the Hub has a Setup Code with an 8 as a number), this Hub supports all sub-devices in the Meross app (which needs to be updated to the latest firmware). All sub-devices except MTS100 and MS100 can be used with this Hub for HomeKit functionality.
If you are using the Non-HomeKit version of the Hub (no Setup Code on the Hub), this Hub only supports MTS100, MS100 2 products in the Meross app and does not support HomeKit functionality.

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