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

8 Channel RS232 TTL232 IO Control Switch Board Com DB9 Serial port for Momentary Self-locking Interlock Latch Delay Relay Module
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sku: 1005006366536249
$8.79
Shipping from: China
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