Sentry Optronics Corp. was founded in 2004 and owns the world’s leading infrared technology and innovated optronic solutions. Sentry Optronics offers complete infrared solutions for diversified applications, including infrared temperature guns, gas detectors, environment measurement instruments and other test equipment. We focus not only our current products but also welcome OEM / ODM project cooperation under your brand name. We can be your reliable partners to success!
Our Philosophy:Excellence、Innovation、Satisfaction.


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  • Visit us at 2018 TAITRONICS Show!
  • Visit us at 2019 TAITRONICS Show!
  • New Sentry Official Website


Refrigerant Leak Detector
ST310/312 series are the refrigerant leak detector with an extremely sensitive semiconductor sensor and front illumination by a LED tip light.
  • Founded in 2004
  • Outstanding Infrared & Optronics Technology
  • Innovated optronics solutions
  • Welcome OEM / ODM business
  • Private label the current products or new design by your own