The 4-20mA multiplexer adopts a user-friendly design, and the input signal value is directly displayed on the LED digital tube, which is intuitive and convenient; The expander converts the input signal into 4 isolated 4-20mA output signals, which are isolated from the power supply.

The 4-20mA expansion module has two usage modes, namely

1. 1-channel input, multi-channel output mode

In this mode, through1 channel 4-20mA input, capable of simultaneously outputting 4 channels of 4-20mA signals of the same analog size, can be used for 1 channel transmitter, and can expand the output of multiple channels. The module can be cascaded to achieve the effect of multiple outputs.

2. Communication control mode

In this mode, throughRS485 is networked with other controllers or upper computers to control the size of 4-channel 4-20mA output signals. The 4-channel 4-20mA outputs can be different from each other and are commonly used in valve control, status control, and other applications.

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