Press
- The Firearms Blog || https://www.thefirearmblog.com/blog/2019/02/07/simtek-wireless-security-sensor/
- Truth About Guns || https://www.thetruthaboutguns.com/2018/12/jeremy-s/gear-review-simtek-duo-wireless-security-sensor-production-model/
- Uncrate || https://uncrate.com/duo-portable-security-sensor/
- Wall Street Journal || https://www.wsj.com/articles/gun-safety-devices-get-caught-in-online-advertising-bans-11549384341
- Richmond Times || https://www.richmond.com/news/virginia/sensing-opportunity-to-save-lives-virginia-tech-graduate-launches-product/article_88d03d5c-a330-5814-8e3a-e2ed10de234c.html
- KotaBoy32 || https://www.youtube.com/watch?v=Fwdh4qKtBtA&t=1s
- US Precision Defense || https://www.concealedcarry-ccw.com/FeedItem/Duo-Portable-Security-Sensor-For-Firearm-Safes/