FireSecure Tools
Engineering Tools for Life Safety Systems
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DIP
Volt drop
PoE
CCTV storage
Ohm’s law
Battery (BS5839)
PoE budget calculator
Quick check: switch budget + per-port limit.
Total PoE budget (W)
Per-port max (W)
Ports available
Device draw (W each)
Devices powered
Overhead (%)
Calculate
Notes: These calculators are for engineering estimation / planning. Verify critical results with standards, manufacturer data, and site measurement.