Input signals

• Microphone: Built in omnidirectional micro-
  phone on both units
• External sound source input: 2.5 mm stereo
  jack plug (0 dBV max input signal)

Output signals

• Headphone socket: 3.5 mm stereo jack plug
• Distortion: 0.05% THD (electrical)
• Frequency range: 40-10 000 Hz
• Tone control: 9 steps
• Volume control: 9 steps
• Output power: 100 mW (16 Ω load)

Radio communication

• Frequency: 2.4 GHz, uses 3 frequencies
• Range: 25 m indoors, clear line of sight
  100 m outdoors, clear line of sight
• Characteristics:
  Encrypted communication
  Automatic channel searching
  Coexists with other radio transmitters
  operating on the 2.4 GHz frequency band

Acoustic specifications

• Maximum output using BE9124 earphones
  132 dB SPL
  
• Gain at full volume using BE9124 earphones
  (60 dB SPL input signal):
  57,5 dB @ 1kHz
  56 dB HFA
• Distortion:
  Using BE9124: 0,08 % THD
  Using BE9122: 0,6 % THD

Environmental requirements

• Operating temperature: 32° to 95° F
  (0° to 35° C)
• Relative humidity: 5% to 95% (non condensing)

Buttons and controls

Power and battery

• Battery power: 3.7V Li-Ion battery
• Operating time: 8-12 hours
  (standard battery)
• Transmitter charging time: 2.5 hours
  (standard battery)
• Receiver charging time: 2.5 hours
  (standard battery)

Accessories

The following accessories are available:

• BE2250 Additional receiver unit
• BE9122 Stereo headphones
• BE9124 Stereo in-ear earphones
• BE9125 Stetoclips
• BE9127 Tie-clip microphone
• BE9137 Cable kit, 5 m (stereo) incl. adapter from 3,5 mm stereo tele jack to RCA (phono)
• BE9128 Neck loop
• BE9143 USB car charger

Regulatory requirements

• Complies with the following requirements:
  CE, FCC, RoHS, WEEE and C-Tick

The package (BE8015)
includes everything you normally need in order to
use your Domino system.

• BE2250 Receiver unit
• BE2270 Transmitter unit
• BE9147 Semi-soft travel case
• BE9142 USB universal charger including 4 mains plugs for EU, USA, Australia & China
• BE9139 Charger cable, USB

• BE9136 Tie clip microphone
• BE9135 Neck strap with safety clasp (2)
• BE9124 In-ear earphones
• User manual
• Available bundled with BE9128 Neck loop (BE8017)

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