Dwyer DDA12 is a Non-Spring Return Direct Coupled Actuator with a temperature range of -22 to 122°F (-30 to 50°C). It operates on 110 VAC, 24 VAC, ±10%, 50/60 Hz, single phase power. The housing is made of NEMA 2 (IP40) enclosure material. It has a terminal block electrical connection with 18 AWG wire. The power consumption ranges from 3 VA to 5 VA depending on the model. It comes with standard accessories including baffles and setscrews. It fits shaft diameters of 0.4" (10 mm) or 0.5" (13 mm) and has overload protection with a magnetic clutch. The angle of rotation is mechanically adjustable at 95°. The running time varies between 72 seconds and 160 seconds depending on the model. It has a visual indicator for position indication and can rotate in both clockwise and counterclockwise directions. There is a push button manual override and the control input can be two-position floating or 4-20 mA/0-10 VDC for different models. The life expectancy is 60000 full cycles and the sound produced is less than 45 dB.