Skip Ribbon Commands
Skip to main content

Voltage Drop Calculator

Voltage Drop calculations for System Sensor AV products can be done using the Honeywell Online Tools for Fire (HOTFire) site.  HOTFire is a free online site that enables users to quickly plan and model notification appliance circuits (NACs) using the entire line of SpectrAlert® Advance and L-Series. Other notification appliances can be loaded by each user. Its simple step-by-step process makes it easy for users to configure panels and circuits from a variety of devices to meet any specification requirement.​

If you already have an active Honeywell account, ESDs or eVance users, your current login credentials can be used with HOTFire.