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MRI-24TR/INV relay module NPN to PNP signal converter PLC sensor polarity IO conversion Opticalcoupler Interface
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7.00
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4-Channel NPN to PNP NPN to PNP Level Converter 4-Channel NPN to PNP Conversion Level Converter Wide Voltage 10-28V
$11.34
34.36
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NPN to PNP to NPN Photoelectric Proximity Switch High and Low Level Signal Output Conversion Module PLC Relay
$1.32
1.55
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