The Parks 811-B Ultrasonic Doppler Flow Detector is our most popular doppler. The Parks Doppler has been a trusted and easy to use unit for many years.

Features a built-in speaker, auxiliary headphone output, rechargeable battery, low-battery indicator and housed in a sturdy case. Supplied with a flat probe, gel, Erka German Sphygmomanometer and set of five Critikon Blood Pressure Cuffs. Very easy to use. Replacement probes and accessories also sold separately.

You can find the specifications and manual here.

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