3.4-20mA/0-5V to RS232/RS485 analog to digital intelligent display smart sensor: ISO 4021 (LED1) series
The ISO 4021 signal isolation acquisition module is used to measure two current or voltage signals that can share the ground and will not interfere with each other. Analog signal input: 24-bit acquisition accuracy, all signal input ranges have been calibrated before the product leaves the factory. When in use, users can also easily program and calibrate themselves. Please refer to the product selection for the specific current or voltage input range. When measuring two signals, the two input selections must be the same.