DEFCON™ - EMP Alert System
DEFCON™ - EMP Alert System
DEFCON™ - EMP Alert System
DEFCON™ - EMP Alert System

DEFCON™ - EMP Alert System

Regular price $179.99 Save $-179.99
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If an electromagnetic pulse (EMP) occurs, most people will remain completely unaware. Only as they discover that many of their modern electronics stopped functioning, will they begin to suspect that something is wrong. The DEFCON™ is designed to detect electrical disturbances resulting from an electromagnetic pulse or a solar coronal mass ejection (CME). This device monitors the power lines and ambient air for damaging disturbances. Once detected, the DEFCON provides audible warnings so that additional protective steps can be taken, such as opening the main circuit breaker to prevent home damage.

What is DEFCON™?

The DEFCON™ is the first low-cost device designed to detect electrical disturbances resulting from an electromagnetic pulse (EMP) or a solar coronal mass ejection (CME). The DEFCON™ plugs into any standard 120-volt AC receptacle and draws less than 50 milliamps of current, about the same as a 5-watt nightlight.

How does EMP ALERT™ detect E1, E2 and E3 of an EMP/CME?

E1 and E2 are detected by a very high-speed circuit capable of detecting electromagnetic disturbances as brief as nanoseconds in duration. E3 is detected by a circuit that continuously monitors the power lines.

How does DEFCON™ warn of an EMP/CME?

The DEFCON provides three distinct audible alarms:

  • (1) a brief ‘beep’ when a very fast E1/E2-type pulse is detected
  • (2) a long sustained ‘beeeeep’ when an E3 overvoltage condition is detected
  • (3) a pulsating ‘beep-beep-beep’ when an E3-induced undervoltage condition is detected.

Red lights also become visible when any detection occurs.

Won’t I already know if an EMP/CME occurs?

Most people will have no way of knowing when an EMP or CME is occurring. In the case of an EMP, the detonation is so high in the atmosphere that it’s unlikely that you will see a flash or hear an explosion. Likewise, while we have warning of an approaching CME, there is no way to predict its effects on our power lines.

What good is it knowing that an EMP or CME is occurring?

Knowing that voltage levels are becoming dangerously high (or low) gives you time to quickly open the main breaker on your home or business. Also, you can warn others in your family or preparedness network, as well as shore up your supplies or consider evacuation.

Won’t an EMP immediately take down the power grid?

The E1/E2 pulses are unlikely to immediately take down the power grid. Rather, it is the sustained E3 energy that drives large currents around the grid, damaging transformers and other infrastructure elements. The DEFCON is designed to give you time to take action while E3 is just beginning.

If I already have whole-house surge protection, do I still need an DEFCON™?

Surge protection devices protect from powerful E1 and E2 conducted transients but not sustained E3 energy. The DEFCON complements protection devices by warning you before E3-induced voltages become dangerously high, allowing you time to open your main breaker.

Will the DEFCON™ be destroyed by an EMP or CME?

The DEFCON is internally hardened with protective devices to help it survive a powerful electromagnetic disturbance, such as an EMP or CME. It also does not contain any digital electronics.

Unique Features of DEFCON™

  • Warns of both EMP and CME disturbances
  • Detects high-frequency impulse resulting from E1/E2
  • Detects out-of-spec line voltage resulting from E3
  • Monitors power lines for conducted effects and ambient air for radiated effects
  • Sound 85 dB alarm – unique alarms for different conditions
  • Hardened analog design – no digital electronics to be zapped
  • Plugs into standard 120-volt AC receptacle
  • Draws about the same power as a 5-watt light bulb
  • Designed and manufactured in the USA



Restrictions on the Purchase, Ownership, or Possession of Body Armor are as follows:

It is a violation of United States Federal Law for a person convicted of a violent felony to purchase, own, or possess body armor. In addition, various states also have enacted legislation restricting the purchase, ownership, or possession of body armor by persons convicted of drug crimes, certain other felonies, or other violent crimes. By purchasing body armor from Hoplite Armor, LLC you acknowledge and certify that:

  1. You have not been convicted of a felony.
  2. The end user has not been convicted of any other crime that would restrict their ability to purchase, own, or possess body armor under any applicable Local, State, or Federal law ordinance or restriction.
  3. The end user will not use any body armor purchased from Hoplite Armor, LLC for any criminal purpose.
  4. The end user is over the age of 18.
  5. The end user will not transport or use any Hoplite Armor products outside of the United States.

Hoplite Armor, LLC reserves the right, in its sole discretion, to refuse the sale of body armor to any person or entity. Additionally, the online sale of body armor to residents of Connecticut and NY is strictly prohibited, unless the sale is made to certain law enforcement or military personnel, or through a face-to-face transaction.

Hoplite Armor does not ship any products outside of the United States in compliance with ITAR regulations. By purchasing, owning, or possessing Hoplite Armor systems, the end user certifies that no Hoplite Armor products will be transported or used outside of the United States.

All statements contained herein, or in any other related Hoplite publication of any kind, are not designed to provide legal counsel in any way, shape or form. It is strongly recommended that customers conduct a reasonable amount of Due Diligence prior to purchasing, owning or possessing body armor in order to avoid any legal ramifications.


Hoplite Armor Lifetime Body Armor Warranty Terms and Conditions:

Hoplite Armor LLC stands behind the reliability and quality of the products we sell. In the unfortunate event that you are shot while wearing products purchased from us, we will replace damaged equipment at no cost to you at any time, as long as a valid police report is provided. This covers all of our body armor products, which includes Body Armor, Plate Carriers, Pouches/Accessories and Apparel. 

Proof of purchase required, only applies to original purchaser, and product must be purchased from Hoplite Armor LLC to qualify. Police report or internal report (if worn in the line of duty) is required as proof of the incident. Picture of the label and serial number is required and must match the serial number associated with the order in our system. Only the damaged product(s) will be replaced. We will replace it with the same product, if unavailable we may replace it with a similar product or reserve the right to issue store credit equal to the original purchase price. 

Warranty only applies to legitimate instances of self defense. Does not cover intentional damage or damage resulting from gross negligence. For example, we will replace your armor if you get shot in a home defense incident. We will not replace it if you shoot it intentionally yourself for any reason, or have your friends shoot you while wearing it. We will not replace it if you are shot while committing a crime such as robbing a bank or convenience store. This warranty does not cover theft.