| | | Main Features | | | |
| Model/Type | R310 | | R320 | | R321 | |
| Approval | 
| C4 < 4000 |
| C4 < 4000 |
| C4 < 4000 |
| Power Supply | Battery Operation or 12-24DC Power Input | | Battery Operation or 12-24VDC Power Input | | 12-24VDC Power Input | |
| Housing | Compact ABS Housing | | Compact ABS Housing | | Sealed to IP65 | |
| Functionality | Zero, Tare, Gross/Nett Keys | | Zero, Tare, Gross/Nett Keys | | Zero, Tare, Gross/Nett Keys | |
| 30.000 divs. @ 20 updates per second | | 30.000 divs. @ 20 updates per second | | 30.000 divs. @ 20 updates per second | |
| | | Battery backed ram for zero, tare, etc. | | Battery backed ram for zero, tare, etc. | |
| | | 5 Points linearity correction | | 5 Points linearity correction | |
| | | 2 isolated transistor outputs | | 2 isolated transistor outputs | |
| | | lb/kg switching, counting, totalising, live weight, hold and peak hold | | lb/kg switching, counting, totalising, live weight, hold and peak hold | |
| | | Date and time | | Date and time | |
| Communication | Bi-directional Isolated infra-red link to RS232 | | Bi-directional isolated infra-red link to RS232 | | Bi-directional isolated infra-red link to RS232 | |
| | | RS232 Serial Output | | RS232 Serial Output | |
| Connections | 4 and 6 wire load cells | | 4 and 6 wire load cells | | 4 and 6 wire load cells | |
| Spring loaded, screwless cable terminations | | Spring loaded, screwless cable terminations | | Spring loaded, screwless cable terminations | |
