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Radar Detector Definition: What the Device Does

A radar detector is a receiver that alerts to certain radar signals; it does not measure your speed or guarantee advance warning.

A radar detector is an electronic receiver designed to alert a driver when it senses signals in selected radar bands. Valentine One describes its detector as tuned to traffic radar bands, while model specifications define the bands and features a particular unit supports. A detector does not measure your vehicle’s speed, identify every enforcement method or guarantee warning before an officer can measure speed.

Radar Detector Definition: What the Device Does

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Questions before you buy

What is the definition of a radar detector?

It is a receiver that senses selected radar signals and alerts the driver. The exact bands and features depend on the model.

Does a radar detector detect speed?

No. It alerts to signals; it does not measure the vehicle’s speed. Use the speedometer and obey posted limits.

Is a radar detector the same as a jammer?

No. A detector receives signals, while a jammer is designed to interfere with signals used for enforcement.

Is a radar detector the same as a speed camera app?

No. An app generally relies on GPS location and camera databases or reports; a hardware detector listens for radar signals.