System One S1-M Master Stations are compatible with all System One room stations and door stations.

The traditional sized S1-M Master is an ideal retrofit for previous Valet intercom master station installations including VM1200 and VM2000 ( retrofits also require older door and room stations to be replaced with System 1 models )

• Supports a Master Station and a combination of up to 20 Room Stations and Door stations.
• Selective room calling to individual stationsor groups of stations
• Paging calls to all stations
• AM/FM Radio with clock
• Door call
• Hands free reply from all stations
• Privacy (Do Not Disturb) function at each room station
• Child Monitoring function
• Music On/Off function
• Auto or manual call cancel
• Digital volume control at each station
• Sensitive electret microphone
• Backlit buttons
• Microphone active indication
• Privacy indication
• System In Use indication
• Illuminated Door chime press button
• 10 programmable door chimes
• Optional control of auxiliary devices
• Optional piped music from auxiliary audio sources
• Upgrade your oldValet or Electron intercom systems- same in-wall size