Apollo Discovery Sounder Base with Isolator (45681-702)


    • £38.02
    • (Exc. VAT: £31.68)
      • In Stock
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    Apollo Discovery Sounder Base with Isolator

    The Discovery Sounder Base is a multifunctional device that incorporates a sounder, a short-circuit isolator within a Discovery mounting base. 15 different tone pairs can be used to signal evacuation and alert. A third selection can be used in instances such as a class change in Schools.

    Brand Information:

    Discovery® is a range of high-specification, analogue addressable fire detectors and alarm devices. Discovery detectors offer effective false alarm management by a combination of EN 54 approved operating modes and sophisticated algorithms.

    Drift compensation further reduces the likelihood of false alarms caused by a build-up of dust in the sensing chamber. In addition to the familiar smoke and heat detectors, the Discovery range features two multisensor detectors. One is an optical/heat multisensor which can be used to protect against many types of fire risk. The other is a carbon monoxide/heat multisensor which protects against both smouldering fires and those generating heat.


    • 15 pairs of tones
    • It is possible to set individual volume of the sounder from the fire control panel
    • Tones can be used for other purposes in addition to warning of fire, ideal for schools
    • Enables soft start option, ideal for hospitals and nursing homes
    • Unique acoustic and visual indicator self-test


    • Operating voltage: 17-28V DC
    • Protocol pulses: 5–9V
    • Current consumption at 24VDC Switch-on surge, <1s: 1.2mA
    • Quiescent : 370µA
    • Device operated at maximum volume: 5.5mA
    • Maximum sound output at 90°: 90±3dB(A)
    • Operating temperature: –20°C to +60°C
    • Humidity (no condensation): 0–95%
    • IP rating: 21C


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