Dwyer DDA42 is a Non-Spring Return Direct Coupled Actuator with a temperature range of -22 to 122°F (-30 to 50°C). It has power requirements of 110 VAC, 24 VAC, ±10%, 50/60Hz, and single phase, with optional 230 VAC. The enclosure material housing is NEMA 2 (IP40) and it has terminal block electrical connections. Power consumption ranges from 3 VA to 5 VA depending on the model. It includes standard accessories such as imitative baffles, baffle setscrews, actuator body setscrew, and an aluminum gasket. 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° and has a running time of 72 seconds for certain models. It has a visual position indicator, direction of rotation can be clockwise or counter clockwise, manual override with a push button, and control input options of two-position floating or 4-20 mA/0-10 VDC. The life expectancy is 60000 full cycles and it produces sound levels below 45 dB.