Universal Base for Fire Detectors

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Sold By: JerseyMEP

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The USB 502 detector base series is used for connecting and mounting the SecuriStar detector family and is completely compatible with the USB 501 detector base series, although this series has a larger connection compartment inside the base. A 6-pin terminal block is present in the interior of the USB 502 for connecting the base to the fire detectors. If necessary, an additional 4-pin terminal block can be fitted in the corresponding snap-in holder to create support points. The detector is fixed in the USB 502 by means of a bayonet connection.


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  • The base is provided with elastic inserts for entry of the installation cables
  • Standard base & surface mounting



Visibility 360 deg
Temperature Range -25 to +70 deg C, -25 to +60 deg C
Housing Material PC-ABS, TPE
Connection Screw terminals
Weight 90 g, 100 g
Version Standard base, surface mounting, without loop contact (black terminal), Base with the illuminated ring, surface mounting, without loop contact (black terminal).


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