Math Refresher CEU


PRICE: $75 for ESA members (NOTE: Membership will be validated post purchase)

This 3 hour course, followed by a short quiz, provides an overview of how to use the mathematical formulas associated with the electronic security industry.

Course Description

This course will cover some of the foundational principals of math that are useful when working with formulas. The course will then review the most frequently used formulas in the following subject areas:

  • Electrical
  • Spacing and slope calculations
  • Battery calculations
  • Camera and lens calculations
  • Troubleshooting

There will also be a review of common formulas, forms, and aids useful in the field.

Pricing Info:

ESA Members receive a discount on National Training School courses. You will have the option to update the price based on your ESA membership status once the item has been added to your cart. ESA Membership will be validated post purchase.

What to Expect in the Online Course:

The course is delivered using a presentation style that is built off the exact same content covered in our instructor led course.  The presentation includes text,audio, graphics, videos and activities to help you absorb the information presented. This course has a short quiz at the end which you will be required to pass with a 70% or greater to complete the course.  

NOTE:  Not all state regulatory agencies allow online courses for licensing or CEUs.  Please check with your licensing agency prior to taking this course for licensing.



3 Hours


Must spend 3 hours in class

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Detailed Course Outline:

Course Learning Objectives

  • Understand the order of operations in a mathematical formula
  • Understand how to work with algebraic formulas
  • Understand how to perform mathematical calculations in the following areas:
  • Resistor ratings.
  • Unit of measure conversions.
  • Ohms and Watts law calculations on series and parallel circuits.
  • Properly determine detector spacing.
  • Calculate slopes as defined in NFPA 72.
  • Calculate the voltage and current related to batteries.
  • Determine the distance from an object using the Pythagorean Theorem.
  • Determine the appropriate lens to use on a camera.

Work with mathematical formulas in the following troubleshooting areas:

  • Determining the proper power supply
  • Amp-hour troubleshooting
  • Determining how large a battery you need
  • Troubleshooting multi-battery power supplies