Dwyer A-AVUL-QFG Air Velocity Transmitter is a highly accurate and reliable device suitable for measuring air velocity in a temperature range of 32 to 122°F (0 to 50°C). It operates on 24 VDC or 24 VAC power and offers a fast response time of 10 seconds. With a NEMA 4X enclosure rating, it is well-protected against environmental factors. The transmitter provides analog output signals of 4 to 20 mA, 0 to 5 VDC, or 0 to 10 VDC, and features digital push buttons for easy zero and span adjustments. Suitable for clean air and non-combustible gases, it can be mounted parallel to the air flow direction. Additional specifications include a 5-digit LCD display (optional), support for BACnet MS/TP or Modbus® RTU/ASCII communication protocols (optional), and electrical entry of 1/2" NPS thread with an accessory cable gland.