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Accessories for XL2

Measurement Microphones

A range of measurement microphones are available to suit your requirements. The mea-surement microphones combine with the XL2 for a comprehensive sound level meter and acoustic analyzer.

The microphones are 48V phantom powered and include an electronic data sheet. The Automated Sensor Detection (ASD) of the XL2 Analyzer automatically reads this data, i.e. the microphone model and calibration data. This promotes faster setup and ensures accurate measurements.

View measurements microphones

Weather Protection WP30 for M2230

NTi Audio #: 600 040 060 (without microphone)

The WP30 Weather Protection is a professional outdoor weather protection kit for the M2230 microphone. Together they form the M2230-WP outdoor microphone. The corrosion-free polymer housing, wind screen, water-repellent membrane and bird spike provide excellent protection from rain, wind, dust and perching birds. It is dedicated for precise acquisition of environmental noise data in outdoor applications.

Product Data M2230-WP

Precision Calibrator 94/114 dB

NTi Audio #: 600 000 388

The precision calibrator is used to ensure accurate sound level measurements. It generates 94 or 114 dBSPL reference tones @ 1 kHz for calibration of 1/2” measurement microphones. The optional 1/4” adapter is required to fit 1/4” measurement microphones.

Product Data Precision Calibrator 94/114dB

1/4” Calibrator Adapter

NTi Audio #: 600 000 391

Adapter to fit 1/4” measurement microphones into the NTi Audio Precision Calibrator.

Ever-ready Pouch

NTi Audio #: 600 000 335

The Ever-ready Pouch protects the XL2 during transport and operation. With its convenient belt-clip, the XL2 can be kept close by for those tasks requiring both hands. The Ever-ready Pouch allows operation of the XL2 fitted in the pouch.

Mains Power Adapter

NTi Audio #: 600 000 333

Mains Power Adapter with removable plug types. It suits the typical power sockets in Australia, China, Europe, Japan, US and UK; 100-240 VAC. (Non-original power supplies may cause interferences with the measurement.)

Battery Charger

NTi Audio #: 600 000 332

The Battery Charger efficiently recharges the spare battery whilst you are using your XL2 Audio and Acoustic Analyzer. One spare Li-Po battery is included with the battery charger.

ASD Cable

The ASD Cable allows for extended connections of the NTi Audio measurement microphones. It supports the transfer of the electronic data sheet from the microphone to the XL2 Analyzer.

NTi Audio #:

  • 5 meter (16 feet): 600 000 336
  • 10 meter (32 feet): 600 000 364
  • 20 meter (64 feet): 600 000 365

The ASD technology offers the electronic data sheet transfer for cable length until 20 meter (64 feet).

XL2 Mounting Adapter

NTi Audio #: 600 000 372

This mechanical adapter piece mounts the XL2 on a microphone stand. Adapters for 3/8" or 5/8" stands are included.

Lightweight Tripod

NTi Audio #: 600 000 397

Rectractable, lightweight tripod with 1/4" and 3/8" mounting thread. The tripod is designed to mount the XL2 Analyzer at a height of up to 1.7 m, or any measurement microphone; in particular the  outdoor microphone M2230-WP.

Weight: 900 g, 32 oz

Folded: 450 x 100 x 100 mm, 18" x 4" x 4"

Unfolded: 500 x 500 x 1700 mm, 20" x 20" x 67"

Limit Light

NTi Audio #: 600 000 600

The XL2 Sound Level Meter in combination with this Limit Light offers a turnkey solution for live sound monitoring.  The Limit Light provides a pre-warning with an orange light and indicates that levels have been exceeded with a red light. The sound level limits are set in the XL2.

Product Data

Stack Light

NTi Audio #: 600 000 610

The XL2 Audio and Acoustic Analyzer in combination with this Stack Light provides a turnkey solution for noise level monitoring or passed / failed measurements where a prominent visual indication is required.

The Stack Light connects directly to the XL2 Analyzer and shows the actual measurement result with three different colors; green, orange and red.

Product Data


The NetBox takes certified class 1 noise measurement data recorded by the XL2 Sound Level Meter and makes it available online. The data is transferred to the NoiseScout Web Portal in real time for secure 24/7 noise monitoring, email limit alerts, data download and reporting through a browser.

NTi Audio #:

  • NetBox (LAN & Wi-Fi): 600 000 450
  • NetBox with Mobile Modem: 600 000 458

Data Credits:

  • 30 Days: 600 000 490
  • 100 Days: 600 000 491
  • 366 Days (1 year): 600 000 492
  • 1096 Days (3 years): 600 000 493

Product Data

NoiseScout Portal with Live Demo

XL2 Input Keyboard

NTi Audio #: 600 000 384

The XL2 Input Keypad offers four marker keys to trigger an event recording or categorize any noise during measurements. A typical application is the subjective categorizing of any annoying industrial noise by persons living in the neighborhood. The XL2 Analyzer connects directly to the XL2 Input Keypad. (requires Extended Acoustic Pack Option installed on your XL2)

Product Data

Digital I/O Adapter PCB

NTi Audio #: 600 000 380

The XL2 Analyzer together with the Digital I/O Adapter controls external peripherals, such as a big red-orange-green lamp displaying exceeding sound levels. The Digital I/O Adapter connects to the digital I/O interface of the XL2 Analyzer.

Product Data

Exel System Case

NTi Audio #: 600 000 334

This compact system case provides the professional transport protection for work in the field. It offers space for the handheld instruments, cables and connectors.

Basic Outdoor Case

The Basic Outdoor Case is a simple and efficient solution for outdoor noise monitoring. Powered either by an external mains supply or a small, high capacity battery pack the case is more than adequate for a number of days of monitoring. The robust and lightweight design protects the XL2 and accessories from a wide range of inclement weather conditions.

NTi Audio #:

  • IP43 rating: 600 000 471
  • IP63 rating: 600 000 473

Product Data

Heavy Duty Outdoor Case

The heavy duty outdoor case delivers a professional solution for medium term unattended noise monitoring. Internal dimensions provide ample space for a sealed lead acid battery to power the XL2 Sound Level Meter for weeks continuously.

NTi Audio #:

  • IP43 rating: 600 000 470
  • IP63 rating: 600 000 472

Product Data

Weatherproof Enclosure for Noise Monitoring Terminal

NTi Audio #: 600 000 480

The weatherproof enclosure is the tailored fixed installation solution for unattended noise monitoring. The enclosure is IP66 rated, highly secure and constructed of strong, hard-wearing reinforced fiberglass.

Product Data

Dodec Speaker Set DS2

The Dodec Speaker Set provides a powerful signal source for building acoustic measurements. The optimized frequency spectrum delivers a high level of equalized sound energy in accordance with ISO 16283 and ISO 3382.

NTi Audio #:

  • Dodec Speaker DS2: 600 000 500
  • Power Amplifier PA2: 600 000 502

Product Data

MA220 Microphone PreAmplifier

NTi Audio #: 600 040 040

The MA220 is a low noise microphone preamplifier compatible with standardized 1/2" microphone capsules. It includes an electronic datasheet for fast setup and ensuring accurate measurements.

Product Data

XLR Adapter ASD

NTi Audio # 600 000 383

XLR male/female Adapter with electronic data sheet for automated sensor detection (ASD) of other sensors.

Application example:

This adapter stores the sensitivity of AFILS-Sensors in the installed electronic data sheet. The XL2 reads this information, is immediately ready for accurate measurements and documents this sensitivity data in the reports.

Product Data

ICP Adapter ASD

NTi Audio #: 600 010 223

The ICP Adapter connects to the XL2 and generates ICP power supply for accelerometers and other custom sensors. The adapter offers an electronic data sheet, which stores the sensitivity and individual serial number of the connected sensor.

Product Data

Vibration Sensor, Accelerometer

NTi Audio # 600 010 347

Heavy-duty vibration sensor (accelerometer) with magnetic base.


  • Voltage Sensitivity = 100 mV/g
  • ICP Power Supply

(requires ICP Adapter ASD)

Product Data

Battery Pack

NTi Audio #: 600 000 086

The lightweight Lithium Ion battery with a nominal capacity of 39 Wh serves as a portable power source where no AC-mains connection is available. After charging the battery for approximately 6 hours, the stored energy typically provides the following operating hours:

  • XL2 Analyzer: 24 hours
  • TalkBox: 12 hours (default STIPA signal)

Product Data

Manufacturer Calibration Certificate

NTi Audio #: 600 000 018

The calibration certificate lists the individual product data with serial number. The calibration and adjustment procedures follow the documentation and traceability requirements of the EN ISO / IEC 17025 standard.

Annual re-calibration of the instrument after the purchase is recommended ensuring accurate measurements.

Sample Maufacturer Calibration Certificate


Technical Overview


Data Analysis

NoiseScout - Unattended Monitoring

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