Bluetooth Wifi RS485 RS232 Relay Board DC 12V/24V 1/2/4/8 Channels PLC Digital IO NPN PNP Signal Amplifier Module

Bluetooth Wifi RS485 RS232 Relay Board DC 12V/24V 1/2/4/8 Channels PLC Digital IO NPN PNP Signal Amplifier Module
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sku: 1005006297079997
$18.51
Shipping from: China
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