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Grade 2 Deltabell Plus External SAB

External Sounder with Fully Backlit Cover

The Grade 2 Deltabell PLUS features a fully back-lit cover to provide around the clock visual deterrent A number of engineer friendly features; the unique levelling mechanism and modular components now make simple sounder installation a reality for you.

The smart 3-way tamper control protects against attack from the front, rear, and power supply cut off. In the event that the Deltabell Plus loses connection with the control panel, the single piezo siren will activate independently.

The integrated spirit level and revolving guide holes make this our easiest to install Grade 2 SAB ever.

Decoy Bell Box Option

The security deterrent nature of the Deltabell Plus on your property can be supplemented by a range of dummy bellboxes.
  • Piezo sounder technology
  • 3 Way tamper action
  • Universal triggering inputs
  • Dual skin 3mm ABS housing
  • Supplied with rechargeable battery
  • Engineer hold off
  • Hinged lid
  • Remote engineer hold off input
  • Full backlit base
  • IP65 rated
  • Various colour combinations available
Product Features
Fully backlit baseThe base of the Deltabell Plus is backlit constantly, providing free advertising for your company
Piezo sounders with high decibel outputBelle: 118dBa. Decibell E/ Deltabell E / Deltabell Plus: 104dBA.
Note: The Belle has 2 piezos.
The Decibell E/Deltabell E/Deltabell Plus have 1 piezo.
3 Way tamper actionActivation from front, back, and power supply cut off ensures protection from sabotage attempts. In this situation, the siren will activate independently of the control panel.
Positive/Negative trigger inputsCan be connected to any output that is positive applied or negative applied on a manufacturer's control panel.
Universal triggering inputsCan be connected to any output on a manufacturers control panel, positive applied, negative applied, positive removed, negative applied.
Revolving guide holesUnique leveling mechanism including in-built spirit level and revolving guide holes.
Supplied with batteryComplete with a backup battery so that even in the event of an intruder sabotage, the bell box will still operate and protect the property.
Siren cut-off timerThe cut off timer is defaulted to 15 minutes to meet industry regulations.
3mm Poly housingEnables a panoramic strobe effect illuminating the full bell box
Engineer hold off facilityWhen first powered with the tamper switch open, the sounder will not activate.
Remote engineer hold offIt is possible to disable the bell box tamper when a control panel is in the engineers menu.
Additional Information

Unique levelling mechanism.
A spirit level is supplied so that you can easily mount the Deltabell PLUS. In addition, to make the installation as simple as possible, revolving guide holes are used to save time lining up screw and drill holes.

Hinged cover.
The Deltabell PLUS has a hinged cover that locks into place so that both your hands are free to work on the sounder.

Fully back-lit cover.
The Deltabell PLUS low power modular unit back-lights the cover; illuminating your screen printed company logo for all to see.

109 dBA sounder.
Piezo sounder with high decibel output.

LED enable/disable.
The comfort LEDs on the Deltabell PLUS can be disabled so potential intruders are not aware of the power status.

Available in a variety of base & screen print colour options.

Technical Specification
Operating voltage9-16Vdc (13.5V nominal)


Strobe duration100mS


 For use in EN50131-1 Systems
Security Grade 2
Environmental Class 4
IP 65 Rated Weather Proof Siren
COMPLIANCE (click image to download certificate)
Min Pack10
Warranty2 Years
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