Bluetooth 4.0 RH Data Logger Temperature & Humidity

Product Code: GMM-BT04-TH
Brand: gmm
Product Condition: New

Bluetooth 4.0 Temperature & Humidity Data Logger

This Bluetooth Low Energy temperature and humidity data logger with the latest Bluetooth 4.0 technology and Nordic N51822 chipset. It can collect temperature and humidity of the surrounding environment and transfer to mobile devices such as smart phones via Bluetooth 4.0. Such data can be recorded as history data. GMM-BT04-TH can store up to 15,000 pieces of the temperature and humidity data. Mobile phone with Bluetooth 4.0 or above can download and install App configuration tool.It can store and monitor temperature and humidity of the environment comprehensively. Its characteristics are small-sized, low-weighted, easily portable and highly accurate for wide use.

A free mobile applications which provided by our company to the users, can connect the GMM-BT04-TH through the Bluetooth of the mobile devices and do the settings and data transmission, recording. Apply the Bluetooth BLE way, so you can use Android phone for temperature and humidity monitoring. Open the App software, the first to see is the scan code interface; there are three interface buttons, they are Real time, Query, Configure; and the upper-left corner of the menu button. Whether you need to enter which interface of this three interface, devices are required serial number code at the back of the sensor, serial number code can be scanned or entered directly using the phone keypad.


  • Real-time display of data
  • High accuracy and stability
  • Bluetooth 4.0 4. Long distance wireless transfer
  • Built-in highly sensitive temperature and humidity sensor
  • It can store 15,000 pieces of temperature and humidity data
  • Can be set the scope of temperature alarm
  • Can be set normal storage temperature and humidity data interval and alarm storage temperature and humidity data interval
  • Every time synchronisation of data, can be saved in history.


  • Cold chain logistics
  • Archives
  • Labs
  • Factory workshop
  • Museum
  • Building temperature and humidity control
  • Medical environment


  • Signal transmission frequency: 2.400-2.4835GHz
  • Protocol standard: Bluetooth 4.0
  • Modulation mode: GFSK
  • Send interval: 2sec, adjustable
  • Built in battery: CR2450, 3V
  • Output power: -4dBm, adjustable
  • Communication rate: 1Mbps
  • Receiving sensitivity: 1Mbps@-93bm
  • Transmission distance: 55 meters, adjustable
  • Storage: 256K, 15,000 data
  • Battery life: 300 day (Depends on the mode of operation, can replace battery)
  • Temperature detection range: -40℃~+125℃
  • Humidity detection range: 0~100%RH
  • Temperature detection accuracy: ±0.3℃
  • Humidity detection accuracy: ±3%RH
  • Temperature Operation range: -20℃~+60℃
  • Net weight: 30g
  • Outline size: 50mm*50mm*20mm

$56.05 inc. tax

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