| Replacement battery cartridge | RB1290X3L |
| Battery Capacity | 12 VAh |
| Cable Length | 119.7" |
| Input power factor | 0.99 |
| Surge protection features | Network, Telephone |
| Package depth | 23.2" |
| Package height | 9.45" |
| Package weight | 53.8 lbs |
| Modem (RJ-11) ports | 2 |
| Storage temperature (T-T) | -20 - 45 °C |
| Power protection features | Short circuit |
| Safety | UL1778, CSA C22.2 NO.107.3-05, FCC DOC Class B |
| Audible alarm(s) | N |
| Surge energy rating | 1780 J |
| LED indicators | Power, Battery replacement |
| Input operation voltage (min) | 60 V |
| Audible alarm modes | Alarm when on battery, Low battery alarm, Overload alarm, Battery replacement |
| Number of batteries supported | 3 |
| Cables included | Phone (RJ-11), Serial, USB cable |
| Typical backup time at half load | 11 min |