Honeywell SEF8MS Wireless Battery Siren Instruction Manual

Honeywell SEF8MS Wireless Battery Siren


Installation Instructions


The SEF8MS is an external, self powered, siren and strobe unit designed for audible signaling and deterrent action for protected premises.


The SEF8MS external siren activates an audible and visual alarm in case of intrusion or alert signaled by the control panel. The sounder will automatically stop after the sounding cycle or as soon as the control panel clears the alarm.The SEF8MS is monitored by the control panel to ensure the device is functioning properly. If a defect is detected, the panel will trigger a supervision fault.In Alpha mode the siren will send a tamper signal to the control panel, if no respond from control panel siren will trigger the sounder and the strobe. Depending on its configuration, in armed status the panel will trigger the sounder and the strobe. When the panel is in disarmed or programming mode, the tamper signals will be ignored and the siren will remain silent (This functionalities vary depending on the panel version and configuration).


Site the siren: 

  1. With space around it to permit good radio reception.
  2. Out of reach of intruders and vandals.
  3. Where it can be seen and heard easily.
  4. Vertically on wall, strobe down.

Do NOT site the siren:

  1. Close to or on large metal structures, for example: metal doors or frames, water tanks, cars, fridges and freezers.
  2. Close to mains wiring or metal water or gas pipes.
  3. Inside metal enclosures.
  4. Next to high voltage electrical or electronic equipment, particularly computers, photocopiers or other radios.
  1. Release the main cover fixing screw protective cover by gently levering out with a terminal screw driver. Undo the cover retaining screw far enough to release the main cover. (See figure 2.a)
  2. Hinge the cover upwards from the bottom and remove it.
  3. Fit rear tamper extender (if required) and trim to desired length. Drill and fix using top centre fixing hole in backplate using suitable screws and wall fixing plugs. Use integral spirit level to align siren and secure with two bottom fixings.Note: When tightening the two bottom fixing screws the rear tamper protection mechanism will compress allowing the two bottom fixing posts to fit flush against the wall (See figure 2.b).
  4. Once the siren unit is fixed on the mounting surface, take the removable tamper activation tab between the thumb and forefinger and pull downwards until the tab is free from the siren unit (see figure 3.c). Discard the tab responsibly.

Note: If the siren is to be moved to a different location, the tamper activation tab should be refitted and the above steps repeated to re- commission the siren.


Registration is the procedure for associating the SEF8MS to the control panel. Below are listed the main steps of the registration procedure:

  2. On the siren, remove the battery compartment cover (See figure 3. a) and fit 8 AA 1.5V Lithium batteries, orientated according to indications in the battery compartment and fitted in numerical order (See figure 1 and 3.b). This will cause the siren to turn on and transmit a registration message to the control panel.Note: Re-registration can be achieved at any time after the batteries have been fitted by closing both cover and rear tamper switches followed by opening either switch.
  4. Insert the battery compartment cover.
  5. Fit the cover to the siren by hooking the top of the cover over the top edge of the backplate, rotating the cover to the fully closed position and tightening the fixing screw.
  6. Fit screw cover in place.


The siren will issue an early warning to the control panel when the battery voltage is low.The siren will continue to self-actuate under tamper conditions for 2 months after the first low battery warning. To replace batteries follow the procedure described bellow:

1. Place control panel in programming mode prior to opening the siren (prevent the panel from triggering the sounder during the battery replacement operation).2. Remove the cover in accordance with steps 1 and 2 in the mounting section.3. Remove the battery compartment cover. Remove the batteries in reverse numerical order (see figure 1).4. Fit 8 AA 1.5V Lithium batteries, orientated according to indications in the battery compartment and fitted in numerical order as indicated in figure 1. The siren will power up and restore its previous configuration and registration.5. Fit the battery compartment cover.6. Fit the cover to the siren by hooking the top of the cover over the top edge of the backplate, rotating the cover to the closed position and tightening the fixing screw.7. Fit screw cover in place.


The sounder and strobe should be tested for correct operation on a periodic basis.During routine maintenance the correct operation of cover and rear tampers should be checked. Check for signs of significant water or insect ingress and clean as necessary. Batteries should be replaced every four years or when advised by the control unit.Note: Prolonged exposure to low or high temperatures or high humidity may reduce battery life. Prolonged periods of alarm will also reduce battery life.


Dimensions 240mm W, 330mm H, 73mm D 240 mm L, 330 mm H, 73 mm  P
Weight 1.0 kg ( without batteries) 
RF Range 2000m ( in open field)
Battery 8 x 1.5V FR6 Lithium AA batteries
Operating voltage SEF8MS:  2.0V – 3.6V & 4.4V –  7.2V
Battery life (Utilization Profile) SEF8MS: 4 years (1h alarm per   year)
Frequency 868MHz narrow band 
Radio Protocols ALPHA, V2GY
Compatibility Domonial
Operating temperature -25°C – 70°C
Compliance, EMC and Safety R&TTE 1999/5/EC, EMC: 2004/108/EC, RoHS: 2002/95/EC, WEEE: 2002/96/EC,
Environmental EN 50130-5:1999 class IV
Approvals and Listing (SEF8MS +

SEF8MSB2 lens)

Complies with EN50131-1 ; EN50131-4 ; C48-266 ; RTC50131-4

Grade 2 ; Environmental class IV ; IP44 ; IK08

Battery fault signal (Supply voltage fault threshold) 2.65V / 5.9V
Siren Output (level 7) 103 dBA @1m / Flash: 1Hz
Supervision Yes
Tamper Cover  and rear tamper
Sounder Volume Selectable from 0 to 7+ ramping volume
Cut-off Timers (strobe and sounder) Selectable from 1s to 4mins (240s)

BATTERY REMOVAL AND HANDLING SAFETY WARNINGRisk of fire, explosion and burns, do not recharge, disassemble, heat above 100° C, or incinerate the battery. While the battery can normally be safely removed by hand, care should be used to ensure that the battery terminals are not shorted, nor the battery damaged, during the removal process. Dispose of depleted batteries by complying with applicable national and local regulations. In the event  of the battery being damaged, use personal protective equipment to remove it immediately, and dispose of it in a safe manner (refer to the battery manufacturer’s specifications for such situations).

Ademco 1 GmbH Hardhofweg 4074821 MosbachPhone: +49 1801 466 388 [email protected]

@2020 Resideo Technologies, Inc. All rights reserved The Honeywell Home trademark is used under license from Honeywell International Inc. This product is manufactured by Resideo Technologies, Inc and its affiliates.

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