The PA5 is a free field audiometer designed for trained healthcare professionals involved in testing young children. It features onehanded operation, silent buttons and a variety of light and sound stimuli. Conditioned Orientation Response (COR) Visual Reinforcement Audiometry (VRA) Auropalpebral Reflex (APR) Conditioned Orientation Response The PA5 is typically used in pairs, with one in each hand, to elicit head-turn responses and provide visual reinforcement during COR tests. The PA5’s one-handed controls allow easy adjustments of frequency and intensity, making testing quick, flexible, and comfortable. Optional TDH Single Headphone For cooperative children, a single TDH39 headphone can be connected to the PA5 to obtain audiometric thresholds. The PA5 automatically adjusts to the correct calibration for TDH39 when the headphones are attached. Silent Presentation Buttons Both light and sound stimuli are controlled by silent buttons, allowing simultaneous presentation by pressing both buttons with a single finger. This makes the PA5 versatile for COR, VRA, and APR testing. Improved Sensitivity The PA5 offers white noise, warble, and narrow-band stimuli options. White noise is particularly effective in evoking responses during the early months of life. More Benefits Flashing Light Stimulation TDH39 Audiometric Headphone (Optional) Robust, Lightweight Standard AA Batteries Automatic Battery Switch Automatic Battery Indication