Overview
The Johnson Controls T-4000-2139 is a beige plastic thermostat cover designed for horizontal-mounted T-4000 series pneumatic room thermostats, H-4100/H-5100 series humidity instruments, and TE-63x4P series sensors. It features a concealed setpoint design without a thermometer or setpoint window to protect internal calibration points from tampering while providing a clean appearance with the integrated JCI logo.
Features
- Durable high-impact beige plastic construction
- Horizontal mounting orientation
- Concealed setpoint adjustment to prevent unauthorized changes
- Integrated Johnson Controls branding on a silver-finish aluminum faceplate
- Non-thermometer and no-window design for enhanced facility security
- Snaps securely onto the mounting base for easy installation and maintenance
Specifications
- Brand: Johnson Controls
- Model: T-4000-2139
- Material: Plastic with aluminum faceplate
- Color: Beige
- Orientation: Horizontal
- Display: No thermometer, no setpoint window
- Dimensions: 3.45 in x 2.05 in x 2.15 in
- Compatibility: T-4000 Series Pneumatic Room Thermostats, H-4100 and H-5100 Series Humidity Instruments, and TE-63x4P Series Sensors
Applications
- Commercial HVAC systems and office buildings
- Healthcare facilities and institutional environments
- Industrial space temperature and humidity control zones
- Retrofit or replacement cover for existing horizontal pneumatic thermostat installations


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