Overview
The ACI HH/CP-RSO is a wall-mounted room temperature sensor designed for building management systems and HVAC applications. ACI Series Room Thermistor and RTD Sensors are designed specifically for HVAC system temperature control, with thermistor and RTD sensor curves compatible with most BAS systems available today. Room sensors are vented for indoor use with options that include setpoint adjust, push-button override, communication jacks, and display. This model combines temperature sensing with manual override capability and setpoint adjustment, making it ideal for zone-level comfort control.
Key Features
- Setpoint Adjustment: Manual slider for precise temperature setpoint control
- Push-Button Override: After-hours occupancy override for flexible operation
- Low Self-Heating Design: Four-way air flow design to minimize self-heating to the sensor
- Easy Wall Mounting: Designed to be mounted over a single gang junction box or hole in the wall using drywall anchors
- Screw Terminal Connectivity: Screw terminal blocks available for making all connections to your building management system
- Thermal Draft Protection: Optional foam backing available to isolate from wall-surface thermal effects
Technical Specifications
Sensor Type: 10K Ohm Type II Thermistor
Setpoint Range: 0 to 10K Ohms adjustable via slider
Temperature Range (typical): 55–85°F with standard markings
Enclosure Style: Beige “-R” or White “-R2” design with four-way airflow
Mounting Method: Wall surface or standard 2″ × 4″ junction box
Mounting Height: 48–60 inches (1.2–1.5 m) from the ground and at least 1.5 feet (0.5 m) from adjacent walls
Terminal Connection: Screw terminal blocks
Placement Guidelines: Avoid external walls, air registers, diffusers, vents, windows, and heat sources
Typical Applications
- Zone-level temperature control in commercial HVAC systems
- Building management system (BAS) integration for multi-zone comfort
- Retrofit temperature sensing in existing building automation networks
- Heating/cooling system setpoint management
- After-hours occupancy override for energy savings
Compatibility & Replacements
Compatible With
- Standard Building Automation Systems (BAS) using thermistor inputs
- BAS networks with 10K Type II thermistor curve compatibility
- Trane and most major HVAC manufacturer control systems
- Standard wall-mounted sensor mounting (2″ × 4″ junction boxes)
Replaces / Drop-In Replacement For
- ACI A/CP-RSO (standard beige enclosure variant)
- ACI A/CP-R2SO (white enclosure variant with setpoint and override)
- Other 10K Type II thermistor room sensors in compatible BAS networks
Works With
- Trane, Carrier, Honeywell, and Johnson Controls BAS systems
- Any building automation platform supporting 10K thermistor inputs
- Standard terminal block wiring (no special communication protocol required)
- Optional LCD display and communication jack accessories
