- Meets or exceeds ANSI S3.6 1989, ISO 389-1985, and relevant occupational standards
- Hearing Threshold Range: 0 to 90 dB in 5 dB steps; accuracy ±2 dB
- Frequency Range: 250–8000 Hz (eight frequencies)
- Harmonic distortion <3%; tone present indicator and tone switch
- Portable; total weight <4.5 lb (complete kit)
- SKU:
- 187865
- Power Source:
- AC Power
- QTY Per Sell:
- 1
- Type:
- Pure Tone Automatic Screening Air Conduction
- Frequency Range:
- 250 Hz
- 500 Hz
- 1000–8000 Hz (up to 8k)
- Frequency Accuracy:
- Better than ±3% across listed frequencies
- Harmonic Distortion:
- Less than 3% (typical)
- Hearing Threshold Range:
- 0 to 90 dB in 5 dB steps; accuracy ±2 dB
- Included Accessories:
- TDH-39 earphones
- Patient response push-button
- Audiogram pad and carrying bag
- Power Options:
- 650A: 110–230 VAC; 650AB adds 9V battery option
- Battery Life (650AB):
- Approx. 48 hours (per manufacturer spec)
- Certifications & Standards:
- ANSI S3.6 (1989)
- ISO 389-1985
- Meets occupational requirements (OSHA, FAA, etc.)
- Warranty:
- 5-year limited manufacturer warranty
- Total Weight (kit):
- Less than 4.5 lb (complete kit with accessories)
- Clinical Applications:
- School screenings
- Primary care and occupational testing
- Pediatric and general practice
- Manufacturer Link:
- Manufacturer: Ambco Electronics product page
- SKU:
- 187865
- Power Source:
- AC Power
- QTY Per Sell:
- 1
- Type:
- Pure Tone Automatic Screening Air Conduction
- ic__sync_id:
- 1
- ic__id:
- 1525
- Frequency Range:
- 250 Hz
- 500 Hz
- 1000–8000 Hz (up to 8k)
- Frequency Accuracy:
- Better than ±3% across listed frequencies
- Harmonic Distortion:
- Less than 3% (typical)
- Hearing Threshold Range:
- 0 to 90 dB in 5 dB steps; accuracy ±2 dB
- Included Accessories:
- TDH-39 earphones
- Patient response push-button
- Audiogram pad and carrying bag
- Power Options:
- 650A: 110–230 VAC; 650AB adds 9V battery option
- Battery Life (650AB):
- Approx. 48 hours (per manufacturer spec)
- Certifications & Standards:
- ANSI S3.6 (1989)
- ISO 389-1985
- Meets occupational requirements (OSHA, FAA, etc.)
- Warranty:
- 5-year limited manufacturer warranty
- Total Weight (kit):
- Less than 4.5 lb (complete kit with accessories)
- Clinical Applications:
- School screenings
- Primary care and occupational testing
- Pediatric and general practice
- Manufacturer Link:
- Manufacturer: Ambco Electronics product page
