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Door contact sensor BLOW 4922# model HO-03C brown magnetic reed switch
Summary description:
Wired door contact sensor BLOW 4922# (HO-03C) in brown, using a magnetic reed switch (kontaktron) to detect door or window opening. Designed for integration with alarm and access control systems, it provides a discreet surface-mounted magnetic contact and a matching magnet. Suitable for residential and commercial security installations to monitor entry points and trigger alarms or automation events.