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](http://ae01.alicdn.com/kf/Hb1878a9846b2487182e711f74bfff693b/8ch-RS232-TTL232-IO-Control-Switch-Board-Com-DB9-Serial-port-for-Momentary-Self-locking-Interlock.jpg_350x350.jpg)
sku: 4000459019653
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$4.74
Shipping from: China
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