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IO25D04 DC 6V 9V 12V 24V 4CH Flip-Flop Latch Relay Board Bistable Self-locking Electronic Switch Module
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R428A01 2 In 1 RS485 RS232 TTL AT Modbus RTU Relay Switch Board PC USB COM UART Serial Port 1 CH 12V DC Module
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Voltage Signal Detection Module
Voltage Signal Detection Module
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OP22B01 12V Output 12v 24V AC 110V 220V to 3.3V 5V 12V 24V Voltage Signal Detection Module Power ON/OFF Alarm Board for PLC RS485 IO Module
$2.08
OP22B01 5V Output 3V3 5V AC 110V 220V to 3.3V 5V 12V 24V Voltage Signal Detection Module Power ON/OFF Alarm Board for PLC RS485 IO Module
$2.08
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