Industrial lightning protection 232 or 485 turn 485 magnetic isolation relay, hub, signal amplification, two-way communication.
![Industrial lightning protection 232 or 485 turn 485 magnetic isolation relay, hub, signal amplification, two-way communication.](http://ae04.alicdn.com/kf/HTB10mxymv9TBuNjy0Fcq6zeiFXa5.jpg)
sku: 32848060323
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$18.68
Shipping from: China
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