Back box


Screws for switching unit


Battery pack BAT3.6-101


Internal alarm indicator


Type plate with adhesive label


Plastic/glass insert


Battery holders


Housing cover


Battery connector




Housing switching contact




Switching unit


Triggering device





1 not included in the scope of delivery

The flashing behavior of the internal alarm indicator is described in document A6V10401120 in the 'Internal alarm indicator' chapter.


  • The back box is fastened.
  • You have a new, undamaged battery pack to hand.
  • You have key FDMK295 and a Phillips screwdriver to hand.
  • The radio gateway has been activated and switched to maintenance mode.
  1. Remove the adhesive label with the serial number from the type plate (3) on the switching unit. Use the adhesive label to mark the position of the radio manual call point FDM275 on the device location plan.
  1. Label the battery pack (2) with the current date.
  1. If the switching unit (7) needs to be switched to 'factory setting'
  • Close the battery connector (5) and press the button in the 'new' opening with a slim pen or pencil for approx. five seconds.
  • The internal alarm indicator flashes red.
  • The radio manual call point FDM275 is set to the factory setting.
  1. Insert the battery pack into the switching unit so that it snaps into place in the three battery holders (4).
  1. Lay the connection cable according to the diagram and connect the battery connector (5).
  • The internal alarm indicator (10) lights up red.
  • After a further 10 seconds, the radio manual call point FDM275 signals that it is not installed in the housing, and the internal alarm indicator flashes every two seconds:
  • If it flashes red, this indicates the factory setting.
  • If it flashes green, this indicates that the radio manual call point FDM275 has already been logged on to a radio gateway.
  • If this does not happen, this means the battery pack is defective and must not be used.
  1. Place the switching unit with the battery pack into the back box (1).
  1. Remove the plastic/glass insert (11). Details on replacing the glass can also be found in the 'Replacing the plastic insert with a glass insert' chapter.
  1. Screw the switching unit tightly to the back box (1) using the two screws supplied with the switching unit (9).
  1. Place the glass/plastic insert (11) between the stops (8) and slide the plastic/glass insert against the triggering device (15), as shown in the diagram.
  • This pre-stresses the spring (14).
  • The internal alarm indicator flashes green and the radio manual call point FDM275 is logged on to the radio gateway.
  • If the process of logging on to the radio gateway is successful, the internal alarm indicator stops flashing.
  1. If the logon process has not been successful after a long period of time, remove the switching unit from the back box and then re-insert it.
  • The search for the radio network starts again.
  1. Install the housing cover on the back box.
  • Hook the top housing cover into the back box.
  • Snap the bottom housing cover into place in the back box.
  • Radio manual call point FDM275 is mounted and ready for commissioning.
Deactivating the manual call points prevents alarms from being forwarded.

The alarm is not triggered.

  1. Mark deactivated manual call points or those which are not fully functional with the notice 'NOT IN USE'!
'Not in use' label