Features
PoE & power budgets
Know before the install that every switch and power supply can carry its load – PoE budgets, power supply amps, battery hours and voltage drop, while you design.
PoE budget per switch
Watts used against the switch’s PoE budget and ports, with the 80 % rule – and which devices need PoE+ (802.3at) or PoE++ (802.3bt).
Power supplies
Amps used against the output of each power supply or access panel – locks, readers and other 12/24 V devices.
Battery hours
Standby time from the battery size and the load, and the battery you need for your target hours.
Voltage drop
Per run from the wire gauge (e.g. 18/2) and the length – flagged when it is above your limit.
Questions
How does a device know its power source?
From its cable run (the device at the end), or choose it in “Powered by”.
Where do the watts come from?
From the device details – use the maximum from the data sheet.
Can I try it without an account?
Yes – the free PoE budget calculator.
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