Power Draw Calculators

Having trouble deciding if you need a power supply for your system? Use our Power Draw Calculators to simplify the process.

Below are the calculators for each system that we carry. These are meant for the Hardwired side of your system. If you are using an all wireless system, you do not need to worry about power consumption. 

NOTE: This does not cover power draw or measurements for sirens. Sirens run on a separate power supplied from the bell circuit.

DSC HARDWIRED PANELS PROVIDE 700 mA OF POWER ON THE KEYBUS (MAIN BOARD).

HONEYWELL PANELS PROVIDE 600 mA OF POWER ON THE KEYBUS (MAIN BOARD).

Keep in mind that the "powered devices" section of these calculators is an averaged 20 mA per device. These calculators are meant for an ESTIMATE of power draw. Every device uses a different amount of power so if you need a more accurate number, check the device's page for exact measurement.

Best practice is to use a power supply for your system if you are even close to the limit. In the event of an alarm, devices use more power, so having extra is never a bad thing.

Please Choose Your System: