The units are easily digitally accessible for data retrieval, Data entry and printing.
All units have a balance RS232 port and a RS232 printer port.
The following ports are installed:
| Unit | Balance RS232 | D1 RS232 | D2 RS232 | USB |
| CAL3K-AP | Yes | Yes | Yes | Yes |
| CAL3K-A | Yes | Yes | Yes | Yes |
| CAL3K-F | Yes | Yes | Yes | Yes |
| CAL3K-S | Yes | Yes | No | No |
| CAL3K-ST | Yes | Yes | No | No |
