Overview
Example Applications
Technical data
Everyone listens. Everyone can speak.
Often used during ...
![[Translate to Englisch:] Icon Werksführung](/fileadmin/user_upload/bms-audio/icons/40_Werksfuehrungen.svg){kind=icon}
Factory Tour
![[Translate to Englisch:] Icon Sicherheitsunterweisung](/fileadmin/user_upload/bms-audio/icons/40_Sicherheitsunterweisungen.svg){kind=icon}
Safety Briefing
![[Translate to Englisch:] Icon Schulung](/fileadmin/user_upload/bms-audio/icons/40_Schulungen.svg){kind=icon}
Shop Floor Meetings
Group with queries
![[Translate to Englisch:] TOM-Audio® acustra®](/fileadmin/user_upload/bms-audio/personenfuehrungsanlagen/acustra/tom-audio-acustra-slider1.png)
On-site training
test free of charge, then buy
Telephone advice
Overview
If necessary, communication is possible in both directions and the monologue becomes a dialog.
Digital wireless technology and noise cancellation ensure reliable, crystal-clear communication—even in noisy working environments.
Automatic pairing and intelligent channel assignment connect your devices in just moments—so you can get started quickly and effortlessly.
Whether it's a guided tour or a full workday, acustra® delivers reliable performance throughout. Thanks to fast USB-C charging, the system is ready to use again in approximately 2.5 hours.
Tour Guide System in use
![[Translate to Englisch:] Shopfloor Meeting mit acustra@](/fileadmin/_processed_/d/9/csm_einsatzbereich-shopfloormeeting_3ce570089f.png)
![[Translate to Englisch:] Produktschulung mit acustra@ als Sprachverstärkung](/fileadmin/_processed_/a/6/csm_einsatzbereich-produdktschulung_dde0c4aa87.png)
![[Translate to Englisch:] Baustellenbegehung mit acustra@ als Sprachverstärker](/fileadmin/_processed_/e/5/csm_einsatzbereich-laute-baustelle_a4406f2d16.png)
Interactive Communication for Tours and Training Sessions
Not every tour is a one-way presentation. With TOM-Audio® acustra®, you stay connected with your group at all times—whether answering questions, leading discussions, or delivering training sessions.
The digital tour guide system combines crystal-clear voice communication with intelligent two-way communication, making it ideal for factory tours, shop floor meetings, safety briefings, and any situation where clear, interactive communication matters.
Example Applications
Product Training
For speakers
![[Translate to Englisch:] Sender acustra® Speaker](/fileadmin/_processed_/b/2/csm_acustra_speaker_4c71f9c95a.png)
![[Translate to Englisch:] TOM-Audio® acustra® HS-4018 Überkopf-Hör-/Sprechgarnitur](/fileadmin/_processed_/b/7/csm_acustra_ac-0100008_ueberkopf-Hoer-sprechgarnitur_e73a0442f2.png)
![[Translate to Englisch:] acustra Tragetasche groß](/fileadmin/_processed_/3/7/csm_acustra_ac-0100009_Tragetasche-gross_16559e3676.png)
For the guest
![[Translate to Englisch:] Empfänger acustra® Listen & Talk](/fileadmin/_processed_/a/e/csm_acustra_listen-talk_6f088da8a8.png)
![[Translate to Englisch:] Sender acustra® Speaker](/fileadmin/_processed_/b/2/csm_acustra_speaker_5f8146c125.png)
![[Translate to Englisch:] TOM-Audio® acustra® HS-4018 Überkopf-Hör-/Sprechgarnitur](/fileadmin/_processed_/b/7/csm_acustra_ac-0100008_ueberkopf-Hoer-sprechgarnitur_d273357b1d.png)
![[Translate to Englisch:] acustra Tragetasche groß](/fileadmin/_processed_/3/7/csm_acustra_ac-0100009_Tragetasche-gross_2697f9f4bf.png)
![[Translate to Englisch:] Empfänger acustra® Listen & Talk](/fileadmin/_processed_/a/e/csm_acustra_listen-talk_594945789a.png)
Construction Site Visits
For speakers
![[Translate to Englisch:] TOM-Audio® acustra® HS-4030 Helm Hör-/Sprechgarnitur mit Kapselgehörschutz](/fileadmin/_processed_/3/5/csm_acustra_ac-0100014_helm-sprechgarnitur_9ed754e9be.png)
For the guest
![[Translate to Englisch:] TOM-Audio® acustra® HS-4030 Helm Hör-/Sprechgarnitur mit Kapselgehörschutz](/fileadmin/_processed_/3/5/csm_acustra_ac-0100014_helm-sprechgarnitur_979febb0e7.png)
![[Translate to Englisch:] Shopfloor-Meeting](/fileadmin/user_upload/bms-audio/personenfuehrungsanlagen/einsatzgebiete/einsatzgebiete_werksfuehrung.svg)
Shop Floor Meeting
For speakers
![[Translate to Englisch:] TOM-Audio® Acustra® HS-4020 Überkopf-Hör-/Sprechgarnitur mit Kapselgehörschutz](/fileadmin/_processed_/9/f/csm_acustra_ac-0100013_ueberkopf-Hoer-sprechgarnitur_f25200ac2f.png)
![[Translate to Englisch:] Transporttasche 18 Slot Ladeleiste](/fileadmin/_processed_/4/4/csm_acustra_ac-0100003-Transporttasche-klein_7d9d482f36.png)
For the guest
![[Translate to Englisch:] TOM-Audio® Acustra® HS-4020 Überkopf-Hör-/Sprechgarnitur mit Kapselgehörschutz](/fileadmin/_processed_/9/f/csm_acustra_ac-0100013_ueberkopf-Hoer-sprechgarnitur_019ed51a05.png)
![[Translate to Englisch:] Transporttasche 18 Slot Ladeleiste](/fileadmin/_processed_/4/4/csm_acustra_ac-0100003-Transporttasche-klein_f8094a4dd6.png)
Technical data
Engineered for Everyday Work
TOM-Audio® acustra® is designed for demanding professional use. Digital wireless technology ensures stable, interference-free voice communication, while noise cancellation delivers outstanding speech intelligibility—even in noisy environments. Automatic pairing and intelligent channel assignment get your system up and running in just moments, with no complicated setup required. With up to 19 hours of battery life, fast USB-C charging, and a weight of just 45 grams, acustra® is built to perform throughout the entire workday.
Details
Frequency Response: 20 Hz – 4 kHz
Operating Time: Approx. 16 hours
Headset Connector: 3.5 mm jack
Microphone Input: Integrated microphone / connector for external microphone
Power Supply: Li-polymer battery (3.7 V / 630 mAh × 2)
Charging Port: USB-C (DC 5 V)
Fast Charging: Approx. 2.5 hours
Standard Charging: Approx. 4.5 hours
Operating Temperature: -10 °C to +50 °C
Frequency Range: 863–865 MHz + 823–832 MHz
Radio Channels: 54
Modulation: GFSK (Gaussian Frequency Shift Keying)
Wireless Range: Approx. 100 m
Receiver Sensitivity: –88 dBm
Dimensions (H × W × D, without antenna): 34 × 20 × 63 mm
Weight: 45 g
Housing Color: Black
Operating Time: Approx. 19 hours
Headphone/Headset Connector: 3.5 mm jack
Microphone Input: Integrated microphone / connector for external microphone
Power Supply: Li-polymer battery (3.7 V / 630 mAh × 2)
Charging Port: USB-C (DC 5 V)
Fast Charging: Approx. 2.5 hours
Standard Charging: Approx. 4.5 hours
Operating Temperature: -10 °C to +50 °C
Frequency Range: 863–865 MHz + 823–832 MHz
Radio Channels: 54
Modulation: GFSK (Gaussian Frequency Shift Keying)
Wireless Range: Approx. 100 m
Receiver Sensitivity: –88 dBm
Dimensions (H × W × D, without antenna): 34 × 20 × 63 mm
Weight: 45 g
Housing Color: Black
- Stromversorgung: 15V 2.4A
- Maße (HxBxT): 48 x 238 x 102 mm
- Ladeschächte: 18
Stromversorgung: 19v 3.43A
Maße (HxBxT): 48 x 238 x 204 mm
Ladeschächte: 36
- Stromversorgung: 19V 6.31A
- Maße (HxBxT): 48 x 238 x 307 mm
- Ladeschächte: 54