Professional 8-Channel Temperature Logger with Ethernet, WiFi, and USB connectivity.

$799

A sophisticated 8 channel temperature data acquisition electronic device with a small onboard display, buttons, Ethernet, USB ports.

The Temperature Logger is a professional-grade data acquisition system designed for precision temperature monitoring across eight independent channels. Supporting 4 thermistor (NTC) and 4 thermocouple inputs, this versatile logger delivers reliable measurements with 16-bit ADC resolution and advanced filtering algorithms. The system features Power over Ethernet (PoE) capability, eliminating the need for separate power supplies in networked installations, plus WiFi connectivity as an automatic failover option. In addition a USB interface allows for local power and connectivity.

Real-time data is accessible through multiple interfaces: a built-in OLED display for at-a-glance monitoring, TCP/IP ur USB streaming for integration with custom data acquisition systems, and a responsive web interface that also serves as a remote configuration interface. Each channel can be independently enabled, configured, and calibrated with support for multiple thermistor resistance values (3kΩ, 5kΩ, 10kΩ, 30kΩ) and all standard thermocouple types (K, J, T, N, S, E, B, R). Advanced features include open-circuit detection, per-channel ABC Steinhart-Hart calibration coefficients, and selectable CSV or JSON data formats for seamless integration with existing workflows.

Technical Specifications

Built around the POE microcontroller platform, the temperature logger employs precision analog front-ends and robust digital filtering to deliver laboratory-grade measurement performance. The architecture supports simultaneous mixed-sensor operation with independent per-channel configuration, making it suitable for diverse thermal monitoring applications from R&D to production environments.

    • POE (IEEE 802.3af/at Power over Ethernet)

    • 5V Micro-USB

    • 4 independent thermocouple channels (K, J, T, N, S, E, B, R)

    • 4 independent thermistor (3k-30kOhm) channels with 16bit ADC

    • Thermocouple: 0.063degC

    • Thermistor 0.01degC

    • Thermocouple: ±1degC (K-type)

    • Thermistor: ±0.5degC (with calibration)

    • USB2.0 (micro USB)

    • Ethernet (10/100 Mbps)

    • Wifi (802.11 b/g/n at 2.4GHz) fallback with automatic switchover

    • Onboard OLED display with 2-button navigations

    • Web Interface through Ethernet/Wifi

    • TCP server for RAW socket access (port configurable)

    • USB serial output (baud rate configurable)

    • JSON or CSV formats

    • Update rates from 1-60sec.

    • Per-channel Enable/Disable

    • Per-channel calibration with Thermocouple selection and Thermistor ABC Steinhart-Hart coefficients

    • Dimensions: 140mm × 42mm × 40mm

    • Mounting Hole for 1/4-20 or M6 screw

    • Internal NVM for configuration parameters

    • Persistent Sensor Configuration

    • Persistent Communication Settings

Temperature Logger in Action

OLED Display

The OLED display shows the temperatures for all channels and the IP address and status if connected. It also allows access to a configuration menu to set most of the system parameters for quick and convenient access.

Onboard OLED display for a temperature logger displaying 8 channels simultaneously and information about network connectivity.
Onboard OLED display showing a menu for configuration of a temperature logger with persistent NVM storage.

Web Interface

The web interface, accessible either through wired or wireless ethernet allows the user to display the temperatures for all channels and change all the configuration settings of the device.

A webpage showing temperature readings from an 8-channel temperature logger with 4 thermistor and 4 thermocouple channels and a fast update rate.
A webpage showing configuration settings from an 8-channel temperature logger allowing access to customized ABC Steinhart Hart thermistor calibration in addition to default values for 3k, 5k, 10k, 30k Ohm thermistors.

Streaming Data

Accessing the streaming data via USB or TCP raw socket allows for continuous monitoring of all channels together with a timestamp of the measurement. The output is ASCII based and available in either CSV or JSON format.

Output of a USB or TCP Socket data streamer showing CSV delimited temperature readings from an 8-channel datalogger.
Output of a USB or TCP Socket data streamer showing JSON formatted temperature readings from an 8-channel datalogger.

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