Specifications

• Sound Quality
  The OHP-4000 utilizes ISD Chipcorder™ technology, which was chosen for its superior sound quality over typical flash-memory-based systems. Sound quality is comparable to systems with 128Kbps or better sampling rates.
• Analog Phone Capability (OHP-4500 only)
  Adds true "hold button" on-hold audio activation to ordinary annalog and KSU-less phones.
• Input
  External audio-in jack
  
• Sample Rate
  8 kHz
• Output
  8 ohm: 4 volts peak to peak
  600 ohm: 8 volts peak to peak
• Memory
  Built in: 8 minutes non-volatile flash
  Expansion: 16, 24 or 32 minutes
• Connectors
  Audio out: RCA jack (2 RJ-11 phone jacks, Model OHP-5500 only)
  Audio in: 3.5mm mini jack
  Trigger: 2.5mm mini
  Power: 2.5mm power jack
• Switches/Controls
  Power on/off
  Monitor speaker on/off
  Volume
  Impedance 8ohm/600ohm
  
• Power
  12VDC @500mA
  Source 110VAC, 60Hz UL/CSA power pack.
• Physical
  Size: 9" x 7" x 2.25" (LWD)
  Weight: 2 lbs