Precision Hygrometers
| Model | Highest II |
| Sensors | Human Hair (RH) Thermistor (°C) |
| Range | 20 – 100% RH / 0 – 50°C |
| Accuracy | ±4% RH (40 – 80% RH, 15 – 25°C) ±7% RH ±1°C (0 – 40°C) ±2°C |
| Dimensions | Ø135mm x 33 (D) mm |
| Weight | 230 g |
| Battery | “AA” battery x 1 |
Thermohygrograph
| Model | Sigma II |
| Sensors | Human Hair (RH) Bimetallic Strip (°C) |
| Range | 0 – 100% RH 15 – 40°C |
| Accuracy | ±1°C (10 – 30°C) ±3% RH (15 – 25°C, 20 – 70% RH) ±7% RH, ±2°C |
| Chart Graduation | 1% RH / 1°C |
| Dimensions | 336 (W) x 295 (H) x 148 (D) mm |
| Weight | 3.1 kg |
| Clock | Quartz clock: 1D, 7D and 32 Days Battery: “C” x 2 Battery Life: 1 year with continuous use |
| Recording Pens | Cartridge Pens (Violet) |
Dataloggers
| Model | SK-L200THIIα |
| Resolution | 0.1% RH (15.0 – 99.9% RH) 1% RH (< 15.0% RH) 0.1°C (-9.9 – 65.0°C) 1°C (< -10°C) |
| Range | 10.0 – 99.9% RH -15.0 – 65.0°C |
| Accuracy | ±(0.1% RH + 1 digit) ±(0.1°C + 1 digit) |
| Memory Capacity | Up to 8100 Lines of Data |
| Log Intervals | 1, 2, 5, 10, 15, 30 secs, 1, 2, 5, 10, 15, 30, 60, 90 mins |
| Connectivity | USB |
| Battery | “AAA” battery x 2 |
| Dimensions | (W) 100 x (H) 73 x (D) 22 mm |
| Weight | 123 g |
| Operating Temperature | -10 to 60°C (no condensation) |