Alpha SP300-12K Intelligent Controller/Amplifier

Intelligent Controller/Amplifier 1 Required for 40 APTS. Requires NTR211 Power Supply. The Alpha Communications® / S.T.R.™ SP300-12K intelligent controller is used only with HT3011W ReliaBUS™ series intercom and VH30-2D videointercom systems. provides 'BUS' circuitry needed to control system functions.

Each gets its from All field connections are positive screw terminal type, or plug-in type. systems up 56 apartments, use 2- units. of 57-88 3- 89-120 4- units.

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