4 Pcs 2 in 1 RS485 RS232(TTL) Modbus AT Command NPN PNP IO Switch Module For Relay Door Lock DC Motor

4 Pcs 2 in 1 RS485 RS232(TTL) Modbus AT Command NPN PNP IO Switch Module For Relay Door Lock DC Motor
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sku: 1005004336964940
$16.89
Shipping from: China
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