Profile: High Sierra Electronics designs and manufacture hydrological monitoring systems and meteorological instruments. We are an ISO 9001:2000 certified company. Our product line includes antennas, data recorders, packaged systems, road weather information systems and sensors. Our Model 3480 is an advance warning system that advises motorists of an impaired or flooded roadway by. The 3480 is a complete roadside warning system that integrates with existing ALERT/IFLOWSFlood warning systems. These are featured with microprocessor based Controller housed in a locking aluminum cabinet, an aluminum mounting pole with a DOT approved breakaway base and anchor, two 12" diameter yellow LED beacon signals, a 50-watt solar panel, battery, lightning protection, a 3dB omnidirectional antenna, and hardware necessary for attaching a 48" warning sign. The high electronics model 5400 road weather station remote processing unit (RPU) is the heart of a non-proprietary/open architecture NTCIP compliant environmental sensor station (ESS). The RPU supports a full range of atmospheric sensors as well as pavement condition sensors and traffic monitoring.