These miniature white magnetic extension sensors can be used in the secondary zone input on the GMM-DC, GMM-DCLR, and GMM-IP67-DC.

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Standard Wide Gap Extension Sensor (GDC-EXT-WG)

2” x .25” Mini Surface Mount Switch Set Wide Gap. Up to 3 inch gap between sensor & magnet.
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GDC-EXT-WG
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Super Heavy Duty Wide Gap Extension Sensor (GDC-EXT-WGHD)

4” x .5” Exterior Surface Mount Switch Set *SUPER HEAVY DUTY* up to 3 inch gap between sensor & magnet.
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GDC-EXT-WGHD
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Standard Wide Gap with Hidden Wire Extension Sensor (GDC-EXT-WGH)

2” x .25” Miniature Surface Mount, Wide Gap (white) Hidden Wire (bottom)
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GDC-EXT-NO
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Recessed Extension Sensor (GDC-EXT-R)

1” x .4” Miniature Recessed Mount 3/8” Switch Set
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GDC-EXT-R
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