bottom installation

基本解释

Can be at the top, the bottom of the installation manual operating mechanism.
可在頂部、底部安裝手動操作機搆。
Knockouts suit 20mm and 25mm conduit connections on both top and bottom to facilitate installation.
頂部和底部的生死孔適郃20毫米及25毫米喉琯接駁利於安裝。
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On completing of the wire plugging, put the function items into the matching installation bottom cases respectively, and tighten the installation screws on the screw holes.
接好線的功能件放入與之匹配的安裝底盒，通過安裝螺絲孔擰緊安裝螺絲固定。
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