8ch RS232 TTL232 IO Control Switch Board Com DB9 Serial port for Momentary Self-locking Interlock Latch Delay Relay Module

8ch RS232 TTL232 IO Control Switch Board Com DB9 Serial port for Momentary Self-locking Interlock Latch Delay Relay Module
sku: 4000459019653
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$4.74
Shipping from: China
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