System Sensor B501AP Addressable Detector Base
The standard base for System Sensor 500, 200, 200+ and 200 Advanced intelligent sensors, with a tamper-resistant option and a break-off address tag.

An isolator base for System Sensor 200 analogue addressable detectors that stops a short circuit from disabling the whole loop and restores the loop automatically once the fault is fixed.
Standards and approvals: CPR, UKCA
System Sensor has not published a specification table for this model. Ask us for the data sheet.
Specifications as published by System Sensor. Please confirm the exact model with us before ordering.
The standard base for System Sensor 500, 200, 200+ and 200 Advanced intelligent sensors, with a tamper-resistant option and a break-off address tag.
A two-wire heated base for System Sensor 200 analogue addressable detectors, used where frost or condensation could otherwise cause false alarms.
A plug-in base for System Sensor smoke and heat detector heads in 2-wire systems, with screw terminals for power and remote annunciator connections.
A 4 inch standard European flangeless mounting base for a plain detector position, UL/ULC listed.
A sounder base that takes the same address as its detector but uses its own device type on the loop, and recognises the System Sensor synchronisation protocol.
The plug-in base for Morley Advanced intelligent sensor ranges, in the ivory version. The standard MI-B501AP is white and the BK version is black.
A universal detector base that fits all Apollo detectors in the Soteria, Discovery and XP95 ranges. It supports isolated and non-isolated devices and has a wide interior for easy access to cables and terminals.
A white flame-retardant polycarbonate mounting box for flush fitting Soteria Dimension detectors into a ceiling opening. It is held in place by self-aligning fixing tabs.
Mounting base for all Intelli-Sense detectors, 110 mm across and 16 mm deep, with device locking and remote indicator connections.
Try "landing valve", "Apollo call point", "9 kg ABC" or a model code.
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