Deter & scare intruders with an external siren/sounder

Sounders & Alarm Bells for Home Security

Alarm systems with external sirens are effective deterrents against burglary. Bells discourage intruders & the noise persuades them to leave in a hurry.

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    Use the power of sound to protect your home
    Deltabell wired & wireless external sirens & bell boxes system

    An externally-mounted siren is one of the most obvious features of a Pyronix home alarm system installed by Ultimate Alarms. We offer both wired & wireless versions of the high security Deltabell sounders. The bell box fitted outside acts as a visual deterrent to thieves while the flashing light & loud noise when activated attract immediate attention in the event of a break-in & persuade any burglar to leave quickly. Check out our full house alarm systems

    Bell box is a visual deterrent
    Sound notifies your neighbours
    Noise encourages intruders to leave
    Flashing light & sound attract attention
    Shortens the duration of burglaries
    Ultimate Alarm External Siren

    Deltabell Exterior Alarm Bell Features

    High-Performance Audible Alarm

    High performance Piezo with low power delivers a loud audible alarm, ensuring alarm activations are heard and responded to.

    An all-day, all-night deterrent

    The siren has a backlit sounder with an illuminated cover that is activated at night as a visual deterrent, with a choice of five colours for bases and covers.

    Visual & audible alarm combined

    The backlit sounder emits a loud siren and a strobe to alert your neighbours and passers-by of any attempted break-in.

    Tamper-proof

    The bell box has a tamper-proof design, so if the cover, base or power supply are interfered with, the alarm will be triggered.

    Weather-proof

    The illuminated sounder is made with waterproof polycarbonate plastic and has extra protection around its electronics for trouble-free operation no matter what the weather.

    Battery back-up

    The Deltabell comes with a built-in backup battery to ensure that the siren will still flash & sound when triggered even in the event of a power cut or interference with the supply.
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