The SRH77 measures relative humidity, pulp and air temperatures simultaneously. It also calculates wet bulb temperature

Features:

• Backlight display for dark environments
• Sealed keypad which protects the instrument from spills and dust
• Min/Max memory and Scan mode
• Includes: Model 1075 General Purpose Puncture Probe, Model 4011 Pipe Strap Probe, and Model 5028 Humidity Probe

Specifications:

• Range: -40°F to 300°F
• Accuracy: ±2% from 20 to 80% RH, otherwise 3%; ±0.3°F or ±0.5% reading, whichever is greater
• Resolution: 0.1°F, 1% RH
• Powered by 9 volt alkaline battery (included)