1. Inleiding
The ISOtunes PRO 3.0 Bluetooth Hearing Protection Earbuds are designed to provide certified hearing protection while allowing for audio streaming and communication in noisy environments. This manual provides essential information for the proper setup, operation, and maintenance of your device.

Image 1.1: ISOtunes PRO 3.0 Bluetooth Hearing Protection Earbuds, Safety Orange variant, showcasing the earbuds, inline control panel, and connecting cable.
2. Pakketinhoud
Verifieer dat al die items wat hieronder gelys word, in jou pakket ingesluit is:

Image 2.1: Visual representation of the ISOtunes PRO 3.0 package contents, including the earbuds, carrying case, USB-C charging cable, various eartips, and cable management clips.
- ISOtunes PRO 3.0 Earbuds
- USB-C-laaikabel
- Dratas
- 4 Pairs of Trilogy™ Foam Eartips (XS, S, M, L)
- 1 Pair of Silicone Triple Flange Eartips
- 2 Cable Management Clips
- 1 Alligator Clip
3. Belangrike veiligheidsinligting
The ISOtunes PRO 3.0 earbuds are designed for hearing protection. Adhere to all safety guidelines to ensure proper function and personal safety.
- OSHA-nakoming: These earbuds are OSHA approved and feature an ANSI-certified Noise Reduction Rating (NRR) of 27 dB. The SafeMax volume limit is set to 85dB to protect against hearing damage.
- Behoorlike pas: Achieving the stated NRR requires a proper seal. Refer to the eartip selection and insertion guide for optimal fit.
- Omgewingsbewustheid: While providing hearing protection, always remain aware of your surroundings, especially in hazardous environments.

Image 3.1: A diagram illustrating the correct method for rolling and inserting foam eartips into the ear canal, alongside a chart detailing various noise levels and their potential for hearing damage.
4. Produkkenmerke
The ISOtunes PRO 3.0 offers a range of features designed for demanding work environments:

Image 4.1: A graphic summarizing the key features: OSHA compliance, Bluetooth 5.4 with LE Audio and Auracast, 27 dB NRR, IP67 dust/sweat/waterproof rating, up to 20-hour battery life, and military-spec drop test durability.
- Certified Hearing Protection: ANSI-certified 27 dB NRR and SafeMax 85dB volume limit.
- Duursame konstruksie: IP67 dust and waterproof rating, tested to military drop & shock standards (MIL-STD 810H), aramid-reinforced cables.
- Verlengde batterylewe: Up to 20 hours of use on a single charge, with USB-C fast charging.
- Hoë kwaliteit oudio: Custom-tuned full-range dynamic drivers for clear sound.
- Gevorderde konnektiwiteit: Bluetooth 5.4 with Low Energy (LE) Audio and Auracast support, dual pairing, and 2-way radio compatibility.

Image 4.2: Demonstrates the versatility of the ISOtunes PRO 3.0 earbuds in different work environments such as outdoor power equipment operation, manufacturing, woodworking, and construction.
5. Opstelgids
5.1 Charging Your Earbuds
Before first use, fully charge your ISOtunes PRO 3.0 earbuds.
- Locate the USB-C charging port on the inline control panel.
- Connect the provided USB-C cable to the port and the other end to a compatible USB power source.
- The LED indicator on the control panel will show charging status. A full charge takes approximately 1.5-2 hours. A 10-minute quick charge provides approximately 2 hours of listening time.
5.2 Eartip Selection and Insertion
Proper eartip selection and insertion are crucial for optimal hearing protection and sound quality.
- Kies die regte grootte: Experiment with the included Trilogy™ foam eartips (XS, S, M, L) and silicone triple flange eartips to find the size that provides a snug, comfortable fit and a good seal in your ear canal.
- Foam Eartip Insertion: Roll the foam eartip into a tight, creaseless cylinder. Insert the compressed eartip into your ear canal and hold it in place for 5-10 seconds while it expands to create a seal.
- Silicone Eartip Insertion: Gently push the silicone eartip into your ear canal until it forms a comfortable seal.
5.3 Bluetooth -koppeling
To connect your ISOtunes PRO 3.0 to a Bluetooth-enabled device:
- Ensure the earbuds are powered off.
- Press and hold the multi-function button on the control panel until the LED indicator flashes blue and red, indicating pairing mode.
- Aktiveer Bluetooth op jou toestel en soek vir beskikbare toestelle.
- Select "ISOtunes PRO 3.0" from the list.
- Sodra dit gekoppel is, sal die LED-aanwyser periodiek blou flikker.
6. Operating Your ISOtunes PRO 3.0

Beeld 6.1: 'n Gedetailleerde view of the ISOtunes PRO 3.0 earbuds and the inline control panel, showing the buttons for power, volume, and multi-function.
6.1 Krag aan/af
- Krag aan: Press and hold the multi-function button for 3 seconds. The LED will flash blue.
- Skakel af: Press and hold the multi-function button for 5 seconds. The LED will flash red and then turn off.
6.2 Oproepbestuur
- Beantwoord/beëindig oproep: Druk die multifunksionele knoppie een keer.
- Verwerp oproep: Druk die multifunksionele knoppie vir 2 sekondes in.
- Stemassistent: Double-press the multi-function button to activate your device's voice assistant.
6.3 Musiekweergawe
- Speel/pouse: Druk die multifunksionele knoppie een keer.
- Volgende snit: Press the volume up (+) button for 2 seconds.
- Vorige snit: Press the volume down (-) button for 2 seconds.
6.4 Volumebeheer
- Verhoog volume: Druk die volume op (+) knoppie.
- Verlaag volume: Druk die volume af (-) knoppie.
6.5 Dual Pairing and 2-Way Radio Compatibility
The PRO 3.0 supports dual pairing, allowing connection to two Bluetooth devices simultaneously. It also offers compatibility with 2-way radios for enhanced communication in professional settings. Refer to your 2-way radio's manual for specific pairing instructions.
7. Sorg en Onderhoud
- Skoonmaak: Regularly clean eartips with a damp cloth. For foam eartips, replace them when they become dirty or lose their elasticity. The earbuds themselves can be wiped with a soft, dry cloth. Do not use harsh chemicals.
- Berging: Store the earbuds in the provided carrying case when not in use to protect them from dust, moisture, and physical damage.
- Waterblootstelling: While IP67 rated, avoid prolonged submersion. Ensure the USB-C port cover is securely closed before exposure to water or dust.
8. Probleemoplossing
| Probleem | Moontlike oorsaak | Oplossing |
|---|---|---|
| Oorknoppies skakel nie aan nie | Lae battery | Charge the earbuds using the USB-C cable. |
| Kan nie met toestel koppel nie | Earbuds not in pairing mode; Device Bluetooth off; Out of range | Ensure earbuds are in pairing mode (flashing blue/red). Turn on device Bluetooth. Move device closer to earbuds. |
| Poor sound quality or low volume | Improper eartip fit; Low battery; Source audio quality | Adjust eartips for a secure seal. Charge earbuds. Check audio source quality. |
| Intermitterende verbinding | Interferensie; Buite bereik; Lae battery | Move away from other wireless devices. Reduce distance to paired device. Charge earbuds. |
9. Tegniese spesifikasies
| Kenmerk | Spesifikasie |
|---|---|
| Model Naam | PRO 3.0 |
| Item Modelnommer | IT-21B |
| Geraasverminderinggradering (NRR) | 27 dB |
| SafeMax Volume Limit | 85 dB |
| Bluetooth weergawe | 5.4 (with LE Audio & Auracast support) |
| Batterylewe | Tot 20 ure |
| Laai tyd | Approx. 1.5-2 hours (10 min quick charge for 2 hours use) |
| Laaipoort | USB-C |
| Waterweerstandvlak | IP67 (Dust, Sweat, and Waterproof) |
| Duursaamheidsstandaard | MIL-STD 810H (Military Drop & Shock) |
| Frekwensiereeks | 20 Hz - 20 000 Hz |
| Impedansie | 32 ohm |
| Item gewig | 8.1 onse |
| Produk afmetings | 4.75 x 4.5 x 2.25 duim |
| UPC | 850045924232 |
10. Waarborg en Kliëntediens
ISOtunes products are backed by a manufacturer's warranty. For specific warranty details, registration, or to contact customer support, please visit the official ISOtunes website or refer to the warranty card included in your product packaging. You may also reach out to the seller directly for assistance.