The Surface Patrol Model 999J dual temperature sensor measures surface and ambient (air) temperatures digitally. This system senses the pavement temperature under your vehicle as you drive at acceptable highway speeds. The driver is alerted in advance of temperatures that may be approaching the freezing point. The objective of the Control Products system is to continuously monitor road surface temperatures from vehicle moving at normal highway speeds. This provides the operator instantaneous feedback on road surface conditions and an early alert to possible icing conditions.

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