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3 pc NO Recessed Gifts Door Alarm service Open Contacts Window Normally

3 pc NO Recessed Door Contacts (Normally Open) Alarm Door Window


3 pc NO Recessed Door Contacts (Normally Open) Alarm Door Window


Product description

These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system. The door position switches operate with a built an internal magnetic reed switch that opens when the opposing magnet comes within ¾” of the door sensor. Hence when the door opens beyond the ¾” point the door position switch will switch from a open signal to an closed signal. When this happens the access control system or alarm system will sense the change in continuity and will know that the door or window has been opened. When the door or window shuts, the door sensor will notify your security system that the opening has been closed.

3 pc NO Recessed Door Contacts (Normally Open) Alarm Door Window

Studying at Cambridge

DAPA Measurement Toolkit

Welcome to the Diet, Anthropometry and Physical Activity (DAPA) Measurement Toolkit.

The DAPA Measurement Toolkit is a free web-based resource to assist researchers, public health professionals, and others to identify and use methods for the assessment of diet, anthropometry, and physical activity.

The toolkit does not recommend or promote any specific method or instrument; it provides information for end-users to be better equipped at using and interpreting existing data or reaching an appropriate decision on choosing methods that are fit-for purpose when planning new studies.

Dietary Assessment

Physical Activity Assessment

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