Resideo C7835A1009 Temperature Sensor

The Resideo C7835A1009 is a communicating discharge air temperature sensor engineered for precise capacity control in Honeywell network zoning systems. Designed for duct-mounted applications, this DATS probe monitors supply air temperature and communicates via the Enviracom 3-wire bus to prevent equipment damage and short-cycling. It is fully heat pump compatible and features field-adjustable high and low limits, allowing technicians to set maximum heating thresholds between 110°F and 160°F. Integrated LED lights provide instant visual feedback on system status—monitoring the EnviraCOM bus activity while alerting to limit excursions or temperature differentials. This discharge air sensor is critical for maintaining efficiency in single unit zone applications, ensuring the air handler or furnace operates within safe thermal parameters to optimize comfort and system longevity. By directly sensing the delivered air, the C7835A1009 provides the necessary feedback loop for advanced HVAC capacity control, keeping your zoned equipment running at peak performance.

• Precise Capacity Control: Monitors discharge air to automatically cycle equipment off when field-adjustable temperature limits are reached, protecting the heat exchanger and cooling coil.
• Communicating Integration: Designed specifically for Honeywell networked zoning, utilizing a simple 3-wire connection to the Enviracom bus for seamless data transmission.
• Diagnostic LED Indicators: Features on-board LEDs that flash or glow to indicate heating/cooling alerts, limit status, and bus communication activity for faster troubleshooting.
• Versatile Compatibility: Seamlessly supports both conventional and heat pump systems in complex zoning or single-unit configurations.

• Where is the best location to install the C7835A1009? The probe should be mounted in the supply air duct before any bypass damper. Avoid installing it in direct line-of-sight of the heat exchanger or cooling coil to prevent premature or inaccurate sensing.
• What wiring is required for this sensor? This unit requires a standard 18-22 gauge 3-wire thermostat cable to connect to the Enviracom terminals (1, 2, and 3) on the zone control panel.
• How do the LED alerts function? In normal operation, the COM light blinks with bus activity. A continuous red light indicates the heating limit was exceeded, while a continuous green light signifies the cooling limit was reached.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.