eletechsup 4 Channel DC 12V RS485 Relay Module Modbus RTU & Co | Shop The World
From USA
Neweletechsup
eletechsup 4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1)
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Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•DC 12V 4Ch RS485 Modbus & AT command Relay Board
•Two instruction-control mode : AT command and MODBUS command
•Under the MODBUS command mode, it can support up to 32 devices in parallel