NT48A08, NT48B20 ,NT48C32 — Multi-Channel NTC Temperature Monitoring with TestController Software Integration

Looking for an RS485 temperature acquisition module with multi-channel measurement, resistance testing and PC-based temperature data logging?

Discover the Eletechsup NT48 series: NT48A08 (8 channels), NT48B20 (20 channels) and NT48C32 (32 channels) — designed for NTC thermistor temperature measurement and industrial data acquisition applications.

🚀 A Real Third-Party Software Integration Reference

The NT48 series has been mentioned by an independent developer in the Circuits Online community. Developer flash2b created TestController device definitions for all three models, bringing these Eletechsup temperature acquisition modules into a PC-based measurement and data logging workflow.

According to the developer's discussion:

✅ 32-channel temperature data logging: NT48C32 can log temperature data from 32 channels using a single module.

✅ Individual NTC calibration: NTC thermistors can be calibrated channel by channel through the TestController Setup menu.

✅ Temperature and resistance measurement: The modules' resistance measurement capability is also reflected in the software's Mode menu.

✅ Software configuration: Dedicated device definitions help integrate the NT48 series into a supported TestController workflow.

The three Eletechsup models were also listed in the TestController V2.96 release notes dated February 19, 2026.

🔗 Read the developer discussion:
https://www.circuitsonline.net/forum/view/message/2627441

🔧 Key Hardware Features and Specifications

• 8 / 20 / 32-channel NTC temperature acquisition options
• RS485 industrial serial communication
• Standard Modbus RTU protocol
• DC 7–25V wide-range power supply
• Low operating current: approximately 10–30mA, depending on the number of connected NTC sensors
• Supports 10K B3950 NTC thermistors with 1% resistance tolerance
• Temperature measurement range: −20°C to +125°C with the recommended NTC sensor
• Specified temperature measurement accuracy: 1% with the recommended sensor
• Selectable baud rates from 2400 to 115200 bps
• Configurable serial parity: none, even or odd
• Modbus function codes: 03, 04, 06 and 16
• Measures temperature and conventional resistor values
• Compact PCB versions and optional DIN-rail enclosures

NTC sensors are sold separately unless otherwise specified in the selected package. Actual measurement performance depends on the sensor and operating conditions.

💡 Where Can You Use the NT48 Series?

🏭 Industrial temperature monitoring and process control
🧪 Laboratory temperature measurement and test equipment
🖥️ PC-based temperature data logging and trend analysis
⚡ Electronics testing and multi-point thermal monitoring
🔋 Battery, power supply and electronic equipment temperature monitoring
🏢 Environmental monitoring and equipment diagnostics
🤖 PLC, SCADA and industrial automation projects
🛠️ OEM equipment development and custom measurement systems

For engineers, system integrators and developers, combining multi-channel NTC temperature acquisition with RS485 Modbus RTU communication creates a practical foundation for scalable temperature monitoring.

Whether you need 8, 20 or 32 temperature measurement channels, Eletechsup offers a choice of hardware configurations to match your application.

🔗 Official Eletechsup product page:
https://eletechsup.com/products/nt48a08-nt48b20-nt48c32-32ch-rs485-temperature-collector-modbus-rtu-relay-board-for-ntc-sensor-inspection

📣 Looking for a multi-channel temperature acquisition solution for your next industrial project? Explore the NT48 series and discover how RS485 Modbus RTU hardware can support your temperature monitoring and data logging requirements.

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