Features:
Universal compatibility
Controls up to 2 stages of heat and 2 stages of cooling plus auxiliary and emergency heat
Auto changeover
Large hybrid display
Auxiliary and emergency heat indicators
Electro-luminescent display backlight
IAQ intermittent fan
F/C temperature display
Nonvolatile memory for all settings
Multimode keyboard lockout with user programmable 3 digit code
Programmable high and low setting limits
Defeatable audible button response
Menu driven setup done from the front panel
Temperature offset (user calibration)
Dual power capable (system/batter)
Multi-stage adjustable temperature differential/cycle rate
Programmable length minimum run time
Programmable auto-changeover dead-band
Programmable fan delays for heat, cool, in both on and off

HEAT STAGES
The PSD122E is capable of controlling systems with up to two stages of heat in furnace mode. In heat pump mode, the thermostat can be configured to control up to two stages of compressor driven heat plus auxiliary and emergency heat stages.

COMPATIBLE WITH:
- Most 24v Gas, Oil, Electric Heating and Air Conditioning Systems
- Single and Multi-stage Heat Pumps
- 2 Wire Hydronic Systems
- Hydronic Air Handlers
- Millivolt Systems

NOT COMPATIBLE WITH:
- 3 Wire Hydronic Systems
- Line Voltage Systems (Without Transformer)
- cannot be used with 120 volt heating systems.

Specifications
Heat/Cool Terminals: RH, RC, O, B, W1, W2, Y1, Y2, G, E, C.
Electrical Ratings: 1-1/2 AMPS at each terminal, 2 AMPS total 24v AC. System or Battery Powered: 2 "AA" Batteries Included.
Temperature Control Range: 45°F to 90°F (7° to 32°). Accuracy: ±1°F over a range of 50°F to 95°F.

Environmental Limits:
Moisture and Dust: meets IP20.
Operating Humidity: 20% to 90% non-condensing.
Operating Temperature: +32°F to +95°F (+0°C to +35°C).
Storage Temperature: -4°F to +130°F (-20°C to +54°C).
Electrical Immunity: meets relevant CE specifications.

Product Specifications:
Stages 2 H / 2 C
Power Hardwire or Battery
Program None
Changeover Auto
Backlight Yes
Remote No
Filter Mon. Yes

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