Dwyer AVLV-2DB1 is an air velocity transmitter with a temperature range of 32 to 122°F (0 to 50°C). It has a response time of 4s (1s at constant temperature) and a field selectable range of 100-400 FPM (0.5-2 m/s). The transmitter is rated NEMA 4X (IP66) and has humidity tolerance of 5 to 95% RH. It supports analog and communication connections and outputs a signal of 4-20 mA, 0-5 VDC, or 0-10 VDC. The device requires 24V power and has digital push button adjustments. It can be used for clean air and non-combustible gases. Optional features include a 5 digit LCD display, multiple communication speeds, and different electrical entries.