There are voltage type and current type in the analog output module according to 2 channel and 4 channel.
ST-4112
Output current 0-20 mA
Output resolution 12 bits
ST-4114
Output current 0-20 mA
Output resolution 12 bits
ST-4212
Output current 4-20 mA
Output resolution 12 bits
ST-4214
Output current 4-20 mA
Output resolution 12 bits
ST-4422
Output voltage 0-10 VDC
Output resolution 12 bits
ST-4424
Output voltage 0-10V
Output resolution 12 bits
ST-4491
Output voltage 0-10 VDC
Output resolution 12 bits
ST-4522
Output voltage 0-10 VDC
Output resolution 12 bits
ST-4622
Output voltage 0-5 VDC
Output resolution 12 bits