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DC 7-24V Power Supply Four Channel Relay Module 8Bit MCU MAX3232 RS232/TTL UART Support Modbus RTU 4 Way Input 4 Way Output

USD 5.91USD 6.57

DC 7-24V Power Supply Four Channel Relay Module 8Bit MCU MAX3232 RS232/TTL UART Support Modbus RTU 4 Way Input 4 Way Output

Description
Specification
1PCS STK404-130S STK404-130
USD 8.40USD 10.12
1PCS STK404-140S
USD 8.40USD 10.12
2PCS STK404-070
USD 8.20USD 9.88
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