Fire alarm sounders explosion-proof are designed for continuous round-the-clock operation in standby mode (providing the possibility of sound alarm signals) in fire alarm and fire extinguishing systems when working in conjunction with reception and control devices. The sirens with index MR are produced under the technical supervision of the Russian Maritime Register of Shipping.
Operation modes of the sirens: start of the sound signal when the power supply voltage is applied; standby mode (the sound signal is switched on when the external "dry" contact K is closed and the power supply voltage is present). Construction - aluminium alloy or stainless steel, two cable entries.
8 audible signals at user's choice, start by supply voltage or external signal. Application in hazardous areas of classes 1 and 2
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