| THE2580 | THE2582 | THE2584 | THE2586/ THE2588 |
| Description | Testo 176 T1 | Testo 176 T2 | Testo 176 T3 | Testo 176 H1 / H2 |
| Sensor | Temperature - Pt100 | Temperature - Pt100 | Temperature - TC Type K (NiCr-Ni) | Temperature - NTC |
| Measuring range | -35 to +70 °C | -100 to +400 °C | -195 to +1000 °C | -20 to +70 °C |
| Accuracy | ±0.2 °C (-35 to +70 °C) | ±0.2 °C (-100 to +200 °C) | ±1 % of mv (-195 to -100.1 °C) | ±0.2 °C (-20 to +70 °C) |
| ±1.0 | ±0.3 °C (+200.1 to +400 °C) | ±0.3 °C (-100 to +70 °C) | ±0.4 °C (Remaining Range) |
| - | - | ±0.5 % of mv (+70.1 to +1000 °C) | - |
| Resolution | 0.01 °C | 0.01 °C | 0.1 °C | 0.1 °C |
| Sensor | - | - | Temperature - TC Type T (Cu-CuNi) | Humidity - Capacitive |
| Measuring range | - | - | -200 to +400 °C | 0 to 100 %RH |
| Accuracy | - | - | ±1 % of mv (-200 to -100.1 °C) | dependant on probe |
| - | - | ±0.3 °C (-100 to +70 °C) | - |
| - | - | ±0.5 % of mv (+70.1 to +400 °C) | - |
| Resolution | - | - | 0.1 °C | 0.1 %RH |
| Sensor | - | - | Temperature - TC Type J (Fe-CuNi) | - |
| Measuring range | - | - | -100 to +750 °C | - |
| Accuracy | - | - | ±0.3 °C (-100 to +70 °C) | - |
| - | - | ±0.5 % of mv (+70.1 to +750 °C) | - |
| Resolution | - | - | 0.1 °C | - |
| Dimensions | 103 x 63 x 33 mm | 103 x 63 x 33 mm | 103 x 63 x 33 mm | 103 x 63 x 33 mm |
| Operating temp. | -35 to +70 °C | -35 to +70 °C | -20 to +70 °C | -20 to +70 °C |
| Protection class | IP50 | IP65 | IP65 | IP65 |
| Channels | 1 internal | 2 external | 4 external | 4 external |
| Product colour | silver | white | silver | black |
| Product/housing material | ABS + PC | ABS + PC | ABS + PC | ABS + PC |
| Measuring rate | 1 s to 24 h | 1 s to 24 h | 1 s to 24 h | 1 s to 24 h |
| Battery type | 1 x Lithium (TL-5903) | 1 x Lithium (TL-5903) | 1 x Lithium (TL-5903) | 1 x Lithium (TL-5903) |
| Battery life | 8 years (15 min. meas. rate, +25 °C) | 8 years (15 min. meas. rate, +25 °C) | 8 years (15 min. meas. rate, +25 °C) | 8 years (15 min. meas. rate, +25 °C) |
| Memory | 2,000,000 measuring values | 2,000,000 measuring values | 2,000,000 measuring values | 2,000,000 measuring values |
| Storage temperature | -40 to +85 °C | -40 to +85 °C | -40 to +85 °C | -40 to +85 °C |
| Weight | 390 g | 220 g | 430 g | 220 g (THE2586) / 430 g (THE2588) |
| Probe Connection | No | Yes - 2 for external Pt100 probes | Yes - 4 thermocouple type K/T/J | Yes - 4 - 2 NTC/ 2 capacitive humidity sensor |
| Contents | testo 176 T1 temperature data logger | Testo 176 T2 temperature data logger | Testo 176 T3 temperature data logger | Testo 176 H1 temperature/humidity data logger |
| with internal Pt100 temperature sensor | with 2 inputs for external Pt100 probes | with 4 inputs for external thermocouple probes | with external probe connections (NTC/capacitive humidity sensor) |
| with robust metal housing | Wall bracket | Wall bracket | Wall bracket |
| Wall bracket | Lock | Lock | Battery |
| Lock | Battery | Battery | Calibration protocol |
| Battery | Calibration protocol | Calibration protocol | THE2588 includes robust metal housing |
| Calibration protocol | | | |