SPECIFICATIONS Inputs: PTC/NTC thermistor or 4-20 mA. Display: 3-digits, red, green or blue display. Range: -58 to 302°F (thermistor); -999 to 999 counts (4 to 20 mA). Power Requirements: 110 VAC, 230 VAC, 24 VAC/DC. Accuracy: Better than 1%. Resolution: 1° or 0.1 count. Front Panel Rating: IP64. Agency Approvals: CE.