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Our Multi-use Temperature and Humidity Logger with Bluetooth connectivity.

Memory: 256k
Temperature Range: -40°C to +72°C / -40°F to +162°F
Humidity Range: 0% to 100%

CALL 800-858-6872


Download Product Brief:
Download a PDF of the EDL-BT04 Quick Start Guide
Download: Android App


The EDL-BT04 is a power-saving wireless temperature and RH data logger, using the latest Bluetooth 4.0 technology. This device uses a state-of-the-art Nordic N51822 chip design. Now collect temperature and RH measurement values on your Android phone and email data files anywhere in the world. Up to 15,000 data points can be captured, stored and analyzed.

With our mobile phone app, the user can wirelessly download the data through the GPRS network and use configuration tools to download a full-stage real-time temperature and humidity graph. The small footprint, and light weight makes it ideal for temperature testing and mapping environmental conditions.


  • Cold chain logistics,
  • Museums,
  • Refrigerators – biologics,
  • Food service – HACCP,
  • Medical and warehousing operations,
  • Pharmacy cold room

Product Features

  • Real-time display of data,
  • High precision and high stability,
  • Bluetooth 4.0,
  • Long-distance wireless communication, 25 meter maximum,
  • Built-in high-sensitivity temperature and humidity sensors,
  • Can store 15,000 temperature and humidity data points,
  • Alarm temperature and humidity limits set by user,
  • Temperature and humidity measurement intervals are set by user,
  • Import data into other apps including Excel,
  • Temperature graphs can be automatically generated using the app.
EDL-BT04 – SKU#8023
Memory 256k Temperature and Relative Humidity
Storage Up to 15,000 data points. See Duration Chart for examples.
Temperature Range -40° C to +72° C / -40° F to +162° F
Temperature Accuracy ±0.3° C / ±0.54° F
Humidity Detection Range 0% to 100% RH
Humidity Detection Accuracy ±3.0% RH
Signal Frequency Transmission 2.400 – 2.4835 GHz
Protocol Bluetooth 4.0
Modulation Mode GFSK
Transmission Interval 10S-24H Continuous setting
Communication Rate 1 Mbps
Receiving Sensitivity 1 Mbps @ -93 bm
Maximum Transmission Distance 25 meters, adjustable
Internal Battery 600 mAh / 3V
Battery Life 1 year. (Depends on mode of operation. Replaceable battery)
Net Weight 30 g
Dimension 50 mm X 50 mm x 20 mm

Specifications subject to change without prior notice.

Phone App screens

Software Highlights:

Temperature Data Logger is a free mobile application provided to connect to the EDL-BT04 using Bluetooth technology. With the mobile phone APP, the user can wirelessly download the data through the GPRS network, and use configuration tools to achieve a full-stage real-time temperature and humidity recording. Options include changing settings, data transmission, recording, synchronization, and uploading to a server. Works with Android, IOS, and Windows 10.

Download: Android App

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