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Impact Sensors: Brain Sentry



About Us

Youth hockey players wearing Brain Sentry-equipped helmets Youth football players wearing Brain Sentry-equipped helmets

Arena Football players wearing Brain Sentry-equipped helmets







Brain Sentry was founded by a team of award-winning product developers with backgrounds in aerospace, medical products and sports.

It began out of a need in the market; lives are being destroyed by concussions. Sports are being ripped apart. In football, over 3,500 former pros sued the NFL over the debilitating effects of head impacts. Some parents, understandably, are refusing to let their kids play. Players aren't disclosing their concussion symptoms and lives are being devastated due to sports-related brain injuries, including secondary impact syndrome - caused by suffering a second impact while playing with an undiagnosed concussion. That's unacceptable. It doesn't have to be this way.

The result of Brain Sentry's efforts has been the development of an innovative helmet-mounted device that alerts when an athlete suffers a potentially dangerous impact.

We help coaches, parents and safety monitors identify players that should be evaluated for a concussion.

Our goal is to help prevent further injury or even death. Sports Just Got A Little Safer.


Simple to Use

The beauty of the Brain Sentry system is in its simplicity.

Our focus is every kid and every helmet. Our development team took significant efforts in designing a system that accurately measures appropriate impact forces, is affordable, is safe, and does not burden the volunteer heroes that run youth sports leagues. There is nothing to maintain. Batteries don't require recharging. Nothing to remember to turn on or off. Brain Sentry sensors just work all season. Period. At the beginning of the season simply activate the sensor and peel and stick it to the back of each helmet. The sophisitcated battery life management system allows the sensor to never need to be turned on or off. The battery never needs to be charged or changed. The sensor is fully sealed and waterproof. At the end of the season it can be simply removed and returned to Brain Sentry for recycling. We then send your team new sensors for next season.

How it works 

Brain Sentry impact sensors

Brain Sentry sensor on Newcastle football helmet








  • When the helmet is not in use the sensor will automatically enter a sleep mode. When it detects motion it becomes active and a green LED light will blink.
  • In the event of a big acceleration of the head, a bright red LED will turn on and blink once every 3 seconds.
  • Once the sensor flashes a red light, the player must be taken off the field and examined using the team's protocol for concussion assessment (e.g. SCAT3) for the possibility of a head injury prior to returning to play.
  • If the player is not injured, the coach or other designated adult simply resets the sensor to turn off the blinking red light. The player's helmet should be checked for proper fit and the player can return to the game. It's that simple.
  • The memory in the sensor keeps track of impacts and time between impacts. If, within 30 days of the first alert, a second big impact is detected, the red light will flash quickly twice every 3 seconds.

NOTE: The sensor is not a brain injury detector. No sensor can diagnose a concussion. The sensor is an impact detector that is carefully calibrated to alert when the brain may have been subjected to a force high enough that could results in injury.

Interpreting Alerts

  • Active when it detects motion with no action required: GREEN
  • Large hit with high potential of injury: RED
  • The number of RED blinks corresponds to the number of impacts during the season.
  • In the event that a RED light flashes on the sensor, immediately pull the athlete from the field and follow concussion-recognition procedures (e.g. SCAT3).