Relative Humidity Range:10 to 100% RH.Input:0 to 1 V, 3 V or 4 to 20 mA.Accuracy:THC-P: ±5% @ 20 to 90%; HS: ±1% RH.Display:3-digit, green, 1/2″ (12.7 mm) digits.Resolution:1 digit.Temperature Limits:32 to 158°F (0 to 70°C).Storage Temperature:-4 to 176°F (-20 to 80°C).Output:16 A SPDT relay @ 250 VAC resistive.Horsepower Rating (HP):1 HP.Control Type:ON/OFF.Power Requirements:115 VAC or 230 VAC (depending on model).Memory Backup:Nonvolatile memory.Weight:2.3 oz (65 g).Front Panel Rating:IP64.Agency Approvals:CE, cURus.