Low Voltage Thermostat: Heat and Cool, Auto and Manual, 7 Day, Horizontal, 6 in Overall Wd Extends workspace of Collection desks Extends workspace of Collection desks The replaceable HEPA filter traps harmful particles such as pet dander Y2 Thermostat Type Low Voltage Voltage 24V AC Temperature settings per day 4 Backlit Screen Yes Backlit Screen Color Green Backlit Type Touch Activated Battery Backup Yes Battery Type (2) AA Batteries Differential Cool 2 °F Differential Heat 2 °F Electrical Connection Type Screw Terminals Filter Change Reminder Yes Frequency 50 Hz PTAC Control Type Touch Screen Dehumidification Control No Differential Type Adjustable Digit Size Standard Display Type Digital Dual Transformer Compatible Yes Fan Settings Auto On Circulate Humidification Control No Includes Mounting Hardware Includes Positive Off Yes Key Pad Lockout Yes Mounting Direction Horizontal Minimum Control Temperature 40 °F Maximum Control Temperature 99 °F Number of Cooling Stages Conventional System 2 Number of Heating Stages Conventional System 3 Number of Cooling Stages Heat Pump System 2 Number of Heating Stages Heat Pump System 3 Number of Zones 3 Overall Depth 1 1 4 in Overall Height 4 1 2 in Overall Width 6 in Programming Capability 7 Day Shape Rectangle System Settings Auto Cool Heat Off Temperature Differential 1