How will Heat effect the Sensors Most of the sensors will be electronic and electronics has a usable heat range.  The sensors along most of the BorderTransportationSystem will have to withstand prolong temperatures that exceed 140 degrees F. in the Arizona / Southern California / West Texas, and New Mexico areas.   The temperature can get to 117 degrees F, but due to being enclosed in boxes or within the towers, temperatures can be much hotter.  Index of ... Industrial Monitoring Instrumentation Intelligent Rolling Stock Monitoring Vaisala IceCast Rail Temperature System Vibration energy harvesting