Siemens 192-840W Pneumatic Retrostat Kit W/White Cover DA

Siemens 192-840W Pneumatic Retrostat Kit is a versatile control device for controlling day and night temperature in HVAC systems. A temperature controlled by this pneumatic retrostat has a single setpoint displayed, and would be effective for those applications in which precise temperature control is essential. The kit has a white plastic cover and operates on a Fahrenheit scale. Because of its compact size, it is a nonintrusive addition to many HVAC systems. Particularly useful in commercial and residential cooling and heating systems is the Pneumatic Retrostat Kit which can control air pressure to provide changes that maintain desired temperatures.