The Wireless thermostat with 7 day or 5 + 2 day programming allows for easy retrofit applications for zoning or non-zoning installations. The thermostat includes the wireless receiver and a wall mount bracket that allows for easy "pop-on" and "pop-off" for hand held programming. The EWT-3900 thermostat is compatible with Single Stage and Two Stage heating and cooling systems, as well as Heat Pumps and Three Stage heating and Two Stage cooling systems. The receiver is 24V powered.

EWC® Ultra-Zone Wireless Thermostat, 19 - 30 VAC, 60 Hz, 7 or 5/2 day Program Programmability, Auto/Manual Changeover, Rechargeable Lithium-Ion Battery Power Source, 1, 2 Heat/1, 2 Cool -Stage, 43833 deg F Differential, Temperature Settings: 45 and 95 deg F, 30 - 99 deg F Operating, 14 - 140 deg F Storage, 0 - 90% RH Non-Condensing Humidity, 300 ft Control, 3-3/4 in W x 0.99 in D x 5.32 in H (Transmitter), 3.85 in W x 1.788 in D x 4.55 in H (Receiver)

• 40 - 60 VA, 19 - 30 VAC, 60 Hz NEC class 2 transformer
• 260 mA at 24 VAC, 1 A max load per terminal
• Up to 300 ft wireless range concrete and steel will reduce range wireless
• 18 ga solid copper wire, do not use stranded or shielded cable wiring
• The temperature differential can be adjusted from 1 - 3 deg F to adjust system cycling response and default setting is 2 deg F
• Capable of locking keypad for unauthorized changes
• Alerts you to change the filter after 400 hr of system run time
• NCM-300, BMPlus3000 or UZC4 compatible ultra zone panels