Siemens QAA22SS.FWSN Room Temperature Sensor with Full HMI Display 0-10V 4-20mA Output

The Siemens QAA22SS.FWSN is a wall-mounted room temperature sensor designed for HVAC and building automation systems. This full-featured unit combines accurate temperature sensing with an intuitive OLED display interface, making it ideal for commercial building applications where occupant control and visibility are desired.

Key Features:

• Selectable analog outputs: 0-10V, 0-5V, or 4-20mA for compatibility with nearly any control system
• Full HMI (Human Machine Interface) with OLED display showing room temperature and setpoint
• Adjustable temperature range: 55°F to 95°F (13°C to 35°C)
• Soft-touch plus (+) and minus (-) keys for easy setpoint adjustment
• Override key for manual occupancy signaling to the controller
• 10K Type II thermistor element for reliable accuracy
• Power supply: 18-36 VDC or 24 VAC ±20%
• White plastic enclosure with Siemens logo and strategically placed ventilation slots
• UL 916 certified for energy management equipment

The QAA22SS.FWSN connects to Siemens Terminal Equipment Controllers (TECs) and other compatible HVAC controllers via RJ-11 cable with plug connections for error-free wiring. The display can be easily configured to limit occupant access to certain functions, providing flexibility for different building zones and occupancy types. Installation hardware including anchors, screws, gaskets, and trim rings are included for mounting on standard electrical boxes or directly to walls.