Emerson Sensi 1F87U-42WF - Create Your Sensi Account; Sensi Thermostat Installation Process

3
Compatibility and common wire
(c-wire) requirement
No common wire
required
• Conventional heating
and cooling systems
Common wire required
• Apple HomeKit
• Heat only or Cool
only (2 wire)
• Heat pumps
Not compatible
• Millivolt systems
*External 24 VAC Transformer
is an option
• Communicating
systems
• Line voltage systems
• Accessory control