Inventis Triangle portable audiometer
Inventis Triangle touch screen display
Inventis Triangle complete hearing assessment


Triangle is a battery-operated, portable screening audiometer, capable of performing automatic and manual pure tone audiometry exams in air conduction as well as, optionally licensed, in bone conduction. Triangle is the ideal choice for professionals on the move.

Triangle represents the state-of-the-art among the screeners:

  • The only one with a graphical display with capacitive touchscreen
  • The only one with a rechargeable lithium battery
  • The only one featuring bone conduction with masking
  • …and the only one with an astonishing Italian design!

The basic version of Triangle offers manual and automatic pure tone audiometry in air conduction, with a testing range from 125Hz to 8kHz.

You can upgrade at any time your Triangle with the following optional licenses:

Bone Conduction license 
To conduct pure tone audiometry in bone conduction and to enable masking signals.

Computer-connectivity license
To transfer exam results to your Maestro or Noah database. 

The Automatic Pure Tone audiometry can be performed choosing among three different protocols:

  • Hughson- Westlake
  • Quick Search
  • Fixed Intensity

In addition to the Hughson-Westlake technique for determining the AC threshold, the user can select the Quick Search for threshold identification, which is based on the first response starting from the minimum selected level, or opt for the Fixed intensity method, a basic screening test conducted at a fixed intensity level.

Lightweight and compact, Triangle is extremely handy and easily transportable even thanks to the dedicated soft carrying case included with the device. The presence of a rechargeable Li-Ion battery makes Triangle the perfect choice for professionals on the move. Triangle is also provided with internal memory to store the exams of up to 100 patients.

Inventis Triangle automatic and manual pure tone audiometry in AC 
Portable system
425 gr
Triangle is extremely handy and easily transportable. It weights only 425 grams (15 oz).
Long battery life
12+ hours of uninterrupted use
Triangle is equipped with recheargeable lithium battery.
Complete hearing assessment
Bone conduction
Optional bone conduction license available with masking.

Available signals Stimulus: pure tone, warble tone
Masking (optional, with “Bone Connectivity” license): NBN, WN
Signals specification Attenuator step: 5 dB
Presentation: Continuous, Pulsed (1 and 2 Hz)
Warble: 5 Hz sine wave modulating signal
Available outputs and transducers AC: DD45 or DD65 headphones, ER-3C insert earphones
BC: B71 bone vibrator
Available tests
  • Manual Pure Tone audiometry
  • Automatic Pure Tone audiometry (available algorithms: HughsonWestlake, Quick Search, Fixed Intensity)
Intensity AC: -10 to 100 dB HL
BC: -10 to 60 dB HL
Frequency range 125-8000 Hz
Patient-operator communication Talk over: built-in microphone
Patient response trigger
Interna database Up to 100 patients
Calibration Validity: 12 months
Connectivity USB driverless connection (opt.)
Compatible software: Inventis Maestro
Display Type: Graphical color TFT LCD, capacitive touchscreen
Size: diagonal 2.8”, 43.2 mm x 57.6 mm
Resolution: 240 x 320 x RGB
Power supply Internal battery: Lithium-Ion rechargeable battery
Battery life: more than 12 hours of continuous use
Main Unit: 5 Vdc, 1.4 A
External dedicated USB adapter: 100-240 Vac, 50/60 Hz, 0.3-0.15 A, IEC 60601-1 compliant
Mechanics Size (WxDxH): 21 x 16 x 4 cm / 8.3 x 6.3 x 1.6 in
Gross weight: 425 g / 0.94 lbs
Freight Packing Size (WxDxH): 40 x 30 x 18 cm / 15.8 x 11.8 x 7.1 in
Gross weight: 2500 g / 5.51 lbs

Inventis S.r.l. a socio unico
Corso Stati Uniti, 1/3
35127 Padova

Tel.: +39.049.8962.844

North America

Inventis North America Inc.
2503 S Washington Ave #586
Titusville FL, 32780

Toll free: +1.844.683.6847


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