Home/sick/Product/Accessories Mounting systems, Device protection (mechanical), If a deTec sender with extension connection does not have an additional guest connected to it, the extension connection has no function and must be sealed with a protective cap.
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Accessories Mounting systems, Device protection (mechanical), If a deTec sender with extension connection does not have an additional guest connected to it, the extension connection has no function and must be sealed with a protective cap.

Reference : 5310772