Chart recorder with temperature and humidity probe. 6-in chart diameter.
Range / Accuracy:
Temp: -40°F to 130°F ± 2°F (40°C to 55°C ± 1°C)
RH: 0-95% (non-condensing) at 32°F to 130°F ±2% (0°C to 55°C) ambient.
Temp : -20°F to 120°F (-30°C to 50°C)
RH: 0 to 100%
Chart speed accuracy: ± 1%. 115 V(ac) with battery backup.