Dc 12V 4 Channel Rs232 Relay Board Pc Usb Db9 Inte 4853133909698

Dc 12V 4 Channel Rs232 Relay Board Pc Usb Db9 Inte 4853133909698

Semoic

Four-channel serial relay: 1. DC 12V power supply (voltage range 9-13V) 2. Standby current (all relays closed) 18MA, 1-way relay "open"...

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