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Tinytag- TGRF-4021 Plus Radio Data Loggers

The Tinytag TGRF-4021 Plus is a high-resolution radio-enabled temperature data logger that uses an external thermistor probe. It enables reliable remote monitoring, alarm signaling, and precise temperature recording over a strong wireless network.

  • Wide Temperature Range: Measures -40°C to +125°C with 0.02°C resolution.
  • Accurate & Stable: Temperature stability of ±0.01°C per °C change from 25°C; overall accuracy depends on the probe used.
  • Remote Monitoring: Radio-enabled with typical 200 m line-of-sight range and simple alarm signaling.
  • Rugged & User-Friendly: IP67-rated housing, replaceable battery with monitor, and external thermistor probe for flexible deployment.

Description

The Tinytag TGRF-4021 Plus Radio Data Logger is a high-precision wireless data logger designed for remote temperature monitoring. Using an external thermistor probe, it accurately measures temperatures from -40°C to +125°C, with high resolution of 0.02°C and excellent temperature stability of ±0.01°C per °C change from 25°C. Its accuracy depends on the connected Tinytag thermistor probe, making it suitable for industrial, laboratory, and environmental monitoring applications requiring reliable real-time data.

Designed for rugged environments, the TGRF-4021 Plus features an IP67-rated case, easy installation with remote alarm signalling, and a strong radio network with a typical 200-meter line-of-sight range. It also includes a battery life monitor and easily replaceable battery, ensuring uninterrupted operation. Its compact yet durable design allows recording directly on-site, providing flexible and precise temperature data logging for critical applications.

Features

  • A thermistor probe is used.
  • a strong data network
  • Recording on location
  • Remote alarm signalling is simple to install and has a typical range of 200m (line of sight)
  • High reading resolution and accuracy
  • Easily replaceable battery
  • Battery life monitor

Specifications

Reading Specification

Parameter Specification
Reading Range -40°C to +125°C
Sensor Type Thermistor (external probe)
Logger Resolution 0.02°C or better
Temperature Stability ±0.01°C / °C change from 25°C
Logger Accuracy Dependent on probe; shown with Tinytag thermistor probe

Physical Specification

Property Specification
IP Rating IP67
Operational Range -20 °C to +55 °C*
Case Length/Height 241 mm / 9.49″
Case Width 155 mm / 6.10″
Case Depth 62 mm / 2.44″
Weight (including antenna) 551 g / 19.44 oz

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