The Parks Medical Electronics 811-BTS Ultrasonic Doppler Flow Detector is a compact, portable device designed for vascular evaluations, making it ideal for clinical and intraoperative applications. 

Key Features:

• High-Frequency Probe: Operates at approximately 8.2 MHz, suitable for detecting blood flow in peripheral vessels. 
• Built-in Speaker: Allows for immediate audio feedback during assessments.
• Rechargeable Battery: Ensures continuous operation without frequent battery replacements.
• Auto-Off Function: Enhances battery life by automatically powering down when not in use.
• Compact Design: Facilitates easy transport and use across various clinical settings.

Applications:

• Vascular Assessments: Assists in detecting blood flow and measuring systolic pressures at sites where a stethoscope cannot be used. 
• Intraoperative Monitoring: Enables real-time blood flow monitoring during surgical procedures.
• Postoperative Care: Useful for lower limb and arm systolic blood pressure measurements post-operation.