(a)   is the physical parts that make up a device.

Factory installation of application-specific controllers by a manufacturer is referred to as (a)   .

A single (a)   controller may be used to control lighting and hot water applications as long as capacity of the controller is not exceeded.

(a)   is the program that enables a controller to function.

A(n) (a)   controller is a controller that modulates the damper inside a variable air volume (VAV) terminal box to maintain a specific building space temperature.

The term " (a)   " is often used to describe network communication modules because they require software that is only provided by their manufacturer to access them.

In the water source heat pump application, the heat pump reversing valve is cycled by the (a)   .

One advantage of a(n) (a)   module is that the software is often embedded in the device and is accessed through a standard web browser.

Unitary controllers are normally compact to allow mounting at the (a)   .

(a)   controllers are custom programmed in the field.

Pressure- (a)   VAV terminal boxes are basic VAV terminal boxes that control air volume only.

A(n) (a)   is a controller that contains inputs and outputs required to operate large central-station air handling units.