Specifications:

General

Accuracy: +/- 1ºF at 75ºF
Display resolution:  +/-1°F (0.6°C) 
Display: 32-character LCD
Programming: Front panel keypad or EIA RS485 interface
Communications: RS485, half-duplex
Memory backup: Non-volatile EEPROM, no battery required
Program Setting: 2 events per day with 7 days per week and 2 holiday schedules (12 periods of up to 99 days each)
Override: Programmable from 0 to 255 minutes

Environmental 

Operating temperature: 32 to 131°F (0 to 55°C) 
Operating humidity: 0 to 100% RH, non-condensing 
Storage temperature: 14 to 140°F (-10 to 60°C) 

Electrical 

Supply voltage: 24 V AC +/- 20% 
Inputs: Built-in and remote platinum RTDs, momentary override and three digital (dry contact) 
Range: Room Temp: 40 to 90°F (built-in or remote) 
Outdoor Air Temp: -40 to 160°F (remote) 
Discharge Air Temp: 0 to 150°F (remote) 
Outputs: Five digital (SPST dry contact, 24 VAC @ 2 A), one 4-20 mA DC analog 
Max. Load Resistance (analog output): 600 Ω 
Common mode rejection: 100 db @ 60 Hz 
Power Consumption: 8 VA max

Specifications subject to change without notice.