High Sierra Electronics, Inc. has been designing and manufacturing environmental monitoring systems for the protection of lives and property since 1992. We focus on customer satisfaction and believe that our success is determined by how well we help our clients. If you can’t find what you are looking for here, please call our office, we’d be happy to talk with you about your needs. Thank you for visiting our website. We look forward to working with you.


Latest Report of the ALERT System

01/19/2016 - As per Jason Demers, Water Resources Technician for the County of Monterey in California:  "...The storm system stalled over the coast range adding significantly to our rain totals.  We received up to 6 inches in the mountains today (1-19-16) and all of the watersheds started flowing rather suddenly.  Since lunch we reached monitor stage on the Big Sur, closed a crossing over the Pajaro, and the Nacimiento jumped up to 6,000 CFS and is still rising.  It always amazes me how rapidly things change.  Days like this really reinforce the value of ALERT systems".


NEW Comal County Flood Sirens In Action 

10/30/2015 - HSE's Flood Warning Project with Comal County in Texas was recently featured in the news:




 NEW - Mobile Surface Sentinel 

Bluetooth communicationThe Model 5436 Mobile Surface Sentinel is a precision instrument that provides pavement temperature and air temperature, in real-time, from a moving vehicle to an in-cab color LCD display unit.

  • Industry Leading Response Time 
  • Color LCD
  • Trending Graphs
  • Alarm Output
MSS winter


NEW Flood Sirens Installed in Comal County 

9/10/2015 - HSE's Project with Comal County in Texas was recently featured in the news:




AWARDED 3rd Prize - Surface Sentinel


HSE's Surface Sentinel was honored at the American Traffic Safety Services Association's 45th Annual Convention in Tampa, FL.  The Surface Sentinel was awarded the third prize for Innovative Product of the Year for an icy roads warning system.  The system utilizes our Surface Sentinel and TAPCO's Icy Roads BlinkerSign to warn motorist of hazardous conditions.  

The ATSSA represents the road safety, traffic safety, and highway safety industry with effective legislative advocacy, traffic control safety training, and a far-reaching member partnership.

Surface Sentinel Website

Surface Sentinel Ad



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