Model EWT-3900 Wireless Programmable Digital Thermostat.
- Power: Thermostat - Rechargeable Lithium-Ion Battery (USB Charging Cable and Wall Charger included). Receiver - 19-30VAC 50/60 Hz from Class 2 Transformer.
- Input Voltage: 19-30VAC 60 Hz Transformer 40 - 60VA MAX. NEC Class 2.
- Current Draw: 260 mA @ 24VAC. Max load per terminal 1 amp.
- Wireless Range: Up to 300 Feet (91 Meters). Concrete and steel will reduce range.
- Wiring: 18 gauge Solid copper wire. Do not use Stranded or Shielded Cable.
- Operation Conditions: Temperature: Operating Range - 30°F to 99°F. Storage Temp - 14°F to 140°F. Humidity: 0% - 90% RH Non-Condensing.
- Compatible Equipment: Single or Two Stage Heating and Cooling Equipment - Gas, Electric, Oil, or Hydronic. One or Two Stage Compressor Heat Pump with Electric Backup Heat.
- Programming: 7 Day or 5/2 Day Programming. Armchair Programming capable.
- Auto-Changeover: Can be set for Auto or Manual Changeover.
- Adjustable Temperature Range: Thermostat can be set between 45°F and 95°F.
- Temperature Differential: The Temperature differential can be adjusted from 1°F to 3°F to adjust system cycling response. Default setting is 2°F.
- Keypad Lockout: Capable of locking keypad for unauthorized changes.
- Filter Monitor: Alerts you to change the filter after 400 hours of system run time.
- Compatible Ultra-Zone Control Panels: NCM-300, BMPlus3000, or UZC4