KNX bus coupler button water-protected surface-mounted 1-gang with control window and single-point operation
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KNX bus coupler button water-protected surface-mounted 2-gang with control window and single-point operation
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KNX water-protected surface-mounted bus coupler button, 2-gang with single-point operation
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KNX water-protected surface-mounted bus coupler button, 2-gang with two-point operation
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