Videx 8000 Series amplifier module 2 button

The 8837M-2 speaker microphone unit (0 button)is an update of the 800 series equivalents. They have improved weather sealing and electronics so as to withstand harsh environments. These modules will fit in the 800 and 8000 series housings. Includes back lit names plates. Requires 800 or 8000 series button modules. Suitable psu is the 520M