Description
The 56-TR43A is a Bluetooth logger for combined temperature and humidity — it uses the included external T/RH sensor THB3001 on a cable, allowing you to place the sensor exactly where the measurement is needed while the electronics remain in a safe location. The measuring range of 0–55 °C and 10–95 %RH covers most indoor environments.
Readings are transmitted directly to your mobile phone or tablet via Bluetooth using the T&D Thermo app — display curves, upload to the T&D WebStorage cloud, or create reports with the TR4 Report app. For higher precision and a wider measuring range (±2.5 %RH), see the 56-RTR507B (wireless) or consider a SHA-3151 high-precision sensor.
Features
- External T/RH sensor THB3001 included
- Temperature measuring range: 0 to +55 °C
- Humidity measuring range: 10 to 95 %RH
- Accuracy ±0.5 °C / ±5 %RH (at 25 °C, 50 %RH)
- Resolution 0.1 °C / 1 %RH
- Response time approx. 11 minutes (90 %)
- Bluetooth 4.2 Low Energy — direct to mobile phone/tablet
- 8,000 data point memory (combined temp + RH)
- 15 fixed logging intervals: 1–60 sec or 1–60 min
- Battery life approx. 1 year on one LS14250 lithium cell
- Built-in LCD with alternating display of temperature and RH
- Report generation via the TR4 Report app
Specification
| Measurement channels | Temperature 1 channel (thermistor) + Humidity 1 channel (polymer) — external, on cable |
|---|---|
| Measuring range | 0 to +55 °C / 10 to 95 %RH |
| Accuracy | ±0.5 °C / ±5 %RH (at 25 °C, 50 %RH) |
| Resolution | 0.1 °C / 1 %RH |
| Response time (90 %) | approx. 11 minutes |
| Logging capacity | 8,000 data points (combined temp + RH) |
| Logging mode | Endless or One Time |
| Communication | Bluetooth 4.2 BLE |
| Download time | approx. 30 seconds (full memory) |
| Protection class | IP64 on the logger (the T/RH probe is not water-resistant) |
| Power supply | Lithium battery LS14250 × 1 (included) |
| Battery life | approx. 1 year |
| Dimensions | 62 × 47 × 19 mm (excl. protruding parts and probe) |
| Weight | approx. 50 g |
| Operating environment | -40 to +80 °C (during wireless transmission: -25 to +80 °C) |
Included accessories
- 56-TR43A logger
- External T/RH probe 56-THB3001
- 1 × Lithium battery LS14250
- Registration code label for T&D WebStorage Service
- Strap for hanging
- Manual set with warranty certificate
Applications
The 56-TR43A is suitable for daily T/RH measurement needs in indoor environments: food storage, wine cellars, greenhouses, museums and archives, pharmaceutical warehouses, classrooms, offices, and data centers. The direct-to-mobile Bluetooth connection makes it ideal for portable measurement tasks — transport monitoring, audit rounds, and quality control. For higher accuracy (±2.5 %RH), see the 56-RTR507B/507BL (wireless with base unit).
