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Door reed contact sensor BLOW HO-03L 4924# white — magnetic door/window sensor
Summary description:
Wired magnetic reed door/window sensor BLOW HO-03L (model 4924#) in white. Designed to detect opening/closing of doors or windows via a magnetic contact switch; suitable for alarm systems, access control and security monitoring. Compact enclosure for surface mounting and simple wiring to control panels or alarm modules.