Alpha SP333 Qwikbus Intelligent Controller

Qwikbus Intelligent Controller 1 Required for 40 Audio Units. Requires SNT333 Power Supply 2-Wire Qwikbus Systems. The Alpha Communications® / S.T.R.™ SP333 is used only with QwikBUS™ series intercom and/or video-intercom provides 'BUS' circuitry needed to control system functions. Each gets its from supply. All field connections are positive screw terminal type, or plug-in type. a minimum of one controller.

• Easily Installs Right on Finished Wall Surface in Optional Junction Box
• Operates Safe Low-Voltage Class II Wiring
• Positive and Connectors