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RS232 DB9 Serial Control Relay DC 5V 9-12V 2 Channel 2CH Switch Board for SCM PC
Brand Unbranded/Generic
MPN RS232 Relay
Model 5V 2CH RS232 DB9 Relay
Country of Origin China
Input Voltage 5V; 9-12V
board color Green

Check the listing for details. RS232 DB9 Serial Control Relay DC 5V 9-12V 2 Channel 2CH Switch Board for SCM PC. Condition: New, Made in China. Listed at 7.14 USD. With capacitor filter circuit, with improved stability. Onboard 2 relay (which can be accessed extended 2-way relay module). Each relay has a LED indicator, LCD lights relay absorption. Simple to operate, most serial instruction are single byte instruction.

$5.71
$7.14