MS-2 & MS-4 Series Manual — P/N 51512:G2 10/18/2011 13
Controls and Indicators Product Description
• Walktest
• Zone Enable/Disable - Zone 1
• Zone Enable/Disable - Zone 2
• Zone Enable/Disable - Zone 3 (MS-4 only)
• Zone Enable/Disable - Zone 4 (MS-4 only)
LED Indicators
• Fire Alarm Zone 1 - red LED
• Fire Alarm Zone 2 - red LED
• Fire Alarm Zone 3 - red LED (MS-4 only)
• Fire Alarm Zone 4 - red LED (MS-4 only)
• Supervisory Zone 1 - yellow LED
• Supervisory Zone 2 - yellow LED
• Supervisory Zone 3 - yellow LED (MS-4 only)
• Supervisory Zone 4 - yellow LED (MS-4 only)
• Trouble Zone 1 - yellow LED
• Trouble Zone 2 - yellow LED
• Trouble Zone 3 - yellow LED (MS-4 only)
• Trouble Zone 4 - yellow LED (MS-4 only)
• Maintenance Zone 1 - yellow LED
• Maintenance Zone 2 - yellow LED
• Maintenance Zone 3 - yellow LED (MS-4 only)
• Maintenance Zone 4 - yellow LED (MS-4 only)
• AC Power - green LED
• NAC Disable - yellow LED
• Zone Disable - yellow LED
• NAC Fault - yellow LED
• System Trouble - yellow LED
• Power Trouble - yellow LED
• Walktest - yellow LED
• Alarm Silence - yellow LED
• Earth Fault - yellow LED (on main circuit board) lights if zero impedance between FACP and
ground exists
• Battery Fault - yellow LED (on main circuit board)
• Charger Fault - yellow LED (on main circuit board)
Local Piezo Sounder
A piezo sounder provides separate and distinct sounds for alarm, trouble, maintenance and
supervisory conditions as follows:
• Alarm - on steady
• Trouble - pulse 1 second on and 1 second off
• Maintenance - pulse ½ second on and ½ second off
• Supervisory - pulse ½ second on and ½ second off