The EL4114-0020 analog output terminal generates analog output signals in the range between 0 and 20 mA. The power is supplied to the process level with a resolution of 16 bits and is electrically isolated. Ground potential for the output channels of the EtherCAT Terminal is common with the 24 V DC supply. The output stages are powered by the 24 V supply. The EL4114-0020 has four channels. The EtherCAT Terminal indicates its signal state by means of light emitting diodes.

The desired calibration certificate can be downloaded from here using the respective serial number

https://www.beckhoff.com/vi-vn/products/i-o/ethercat-terminals/el4xxx-analog-output/el4114-0020.html