Edwards 590 Series Class 2 Signaling Transformers are easy to install, low voltage power sources for residential, commercial, and industrial uses. Mounts in a standard 1/2 (13mm) knockout or surface mounts using the provided foot mounts. These transformers are suitable for mounting in both plastic and metal back boxes. May also be used with the Cat. No. 593 transformer plate for enclosed mounting in a standard two gang outlet box. The Edwards 598, 598Y, 599 599Y transformers offer high power for long wire runs or for applications requiring greater power such as door openers. Ideal for large apartments and building elevators. When selecting transformers, attention should be given to the power requirements of the signal or load and the wire run between the transformer and load.