1. Choose Your Desired Backup Time
The following recommendations are based on a single Swiftlane intercom unit. As a rule of thumb, backup time is reduced by 50% for every additional device added to the same UPS.
Option A: 4+ Hours of Backup
A reliable mid-range option for standard protection.
Option B: 9+ Hours of Backup
Best for high-traffic buildings that need to remain operational through long outages or overnight.
Option C: 10+ Hours of Backup
For maximum security uptime. To achieve 10+ hours, we recommend using one high-capacity UPS per intercom unit.
2. Multi-Device Calculation
When connecting multiple intercoms (e.g., Vision 5, Vision 7, or Vision 10) to a single UPS, the battery will drain significantly faster.
The Half-Life Rule: For every additional intercom you plug into the UPS, your total backup time will be cut in half.
Example using the APC BX1500M:
1 Device: ~9.0 hours of backup
2 Devices: ~4.5 hours of backup
3 Devices: ~3 hours of backup
3. Quick Reference Table
Model Number | Capacity | Est. Backup (1 Device) |
APC BN450M | 35 Wh | 30 Minutes |
APC BR700G | 64 Wh | 2 Hours |
CyberPower CP850PFCLCD | 75 Wh | 4 Hours |
APC BX1500M | 162 Wh | 9 Hours |
APC BR1500MS2 | 192 Wh | 10+ Hours |
4. Setup Tips
Use the Right Outlet: Most UPS units have "Surge Only" and "Battery + Surge" outlets. Ensure the intercom is plugged into the Battery + Surge side.
Battery Maintenance: UPS batteries typically last 3–5 years. If the UPS begins beeping or the display shows a battery fault, it is time for a replacement.