Fast, no-nonsense calculators for low-voltage installers. Voltage drop, PoE budgets, battery standby, camera storage. Built for installers, and for the phone in your pocket on site.
A working preview. Two-conductor run, copper.
Ohms per 1,000 ft from NEC Chapter 9, Table 8 (uncoated copper, 75 °C). Out-and-back length is counted for you. Check your device's minimum voltage.
Size the wire for a 12 or 24 V run before the lock or camera browns out.
Cameras, APs and readers against a switch's budget, per port and in total.
Standby and alarm current to amp-hours, for fire and access control panels.
Days of retention from bitrate, codec, resolution and camera count.
How many Cat6 or composite cables actually fit, by conduit trade size.
Ethernet and HDBaseT limits, and where you need a switch or extender.