2X 12V 4 Channel RS232 Relay Board PC USB DB9 Interface Relay Module Serial Port Remote Control
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Buy 2X 12V 4 Channel RS232 Relay Board PC USB DB9 Interface Relay Module Serial Port Remote Control
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2X 12V 4 Channel RS232 Relay Board PC USB DB9 Interface Relay Module Serial Port Remote Control | £19.74 |  | |||
Four-channel serial relay: 1. 12V power supply (voltage range 9-13V) 2. Standby current (all relays closed) 18MA, 1-way relay "open" 50MA,
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