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Wireless Handheld Mic Transmitter E201K
A Tour Guide System Solution Tailored for High-Noise Environments
Hear the Guide, Not the Noise.
No matter how loud the world gets, It captures the voice you want to hear with crystal clarity.
The IndoorLink E201K wireless handheld mic transmitter is designed for professionals who need clear, uninterrupted communication in any environment — especially those with high ambient noise Whether in factories, manufacturing plants, warehouses, construction sites, airports, or busy educational facilities, the E201K tour guide system ensures crystal-clear audio performance even in the most challenging acoustic conditions.
manufacturing plants
warehouses
construction sites
airports
How does IndoorLink Tour Guide System work?
Wireless handheld microphone transmitter equipped with a pickup system, engineered for high-noise environments and features dual-end noise reduction, delivering broad-spectrum, powerful noise suppression while maintaining HD-clear audio quality.
Noise-reducing pickup system
Dual-end noise cancellation
Broad-spectrum noise suppression
HD-clear audio
Noise Reducing Audio Pickup System
Engineered for Extreme Noise Environments
Advanced Noise Reduction "Black Tech"
High-performance noise-canceling microphone with Multi-Stage Noise Reduction to actively filter background noise and removes ambient sounds
- Acoustic isolation noise control, to block external noise at the source
- Super cardioid directionality, for ultra-focused voice capture and maximum off-axis rejection
- Voice-optimized mic capsule tuned specifically for human speech
Super cardioid Directional Mic
High sensitivity and shaped frequency response delivering rich, full audio with exceptional clarity and natural tonal depth.
Hear the guide, not the noise
Upgraded noise resistance
Compared to standard ECM capsules, delivers markedly better suppression in 90 dB+ heavy noise environments.
Clarity first
Acoustic isolation and noise reduction: less leakage, more output—no more “can’t hear it”
Transmitter + Receiver Dual end Noise Reduction
A heavy-noise audio guide that truly achieves “clear hearing, stable signal, and long distance”
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When paired with the E105 Ultimate receiver, it forms a closed-loop matrix noise reduction system.
A guide device that truly achieves “clear hearing, stable signal and long distance” in audio guide.
Why IndoorLink?
Comparison with Traditional Noise Reduction Solutions.
| Noise Reduction | ||||
|---|---|---|---|---|
| Features | IndoorLink tour guide system | Receiver side noise reduction | AI based algorithms | Standard EMC mic capsule |
| Noise Reduction Effectiveness | Transmitter: strong noise reduction; Receiver: basic noise reduction. | Weak | Advanced | Basic |
| Performance in >80 dB Environments | Excellent | Weak | Moderate | Poor |
| Dual-End Noise Cancellation? | Yes | No | No | No |
| Broad Spectrum Noise Suppression? | Yes | No | No | No |
| Audio Quality During Noise Reduction | High-definition, natural, and rich in detail. | Average | Average | Junior PHP developer |
Two in One Wireless Handheld Microphone Transmitter
Integrates the transmitter and microphone into one sleek, professional unit. Compact, lightweight, and highly portable.
About half the size of a Standard Vocal Microphone, it functions as both a microphone and a transmitter.
Master-grade Sound Quality
Clarity Beyond Noise Reduction Enjoy clarity in loud environments and rich fidelity in quiet ones
Meticulously tuned by acoustic masters,
The 16.2 mm dual-ring resonant driver delivers airy highs, powerful bass, and higher output.
Maintains high-fidelity vocal reproduction even while reducing noise.
Directional sound delivery, focusing audio straight into the ear
Optimized ear‑canal fit reduces sound leakage, boosts volume, and elevates overall audio performance.
- Optimized earphone design reduces sound leakage, focuses acoustic waves, and enables directional audio transmission.
- Increased diaphragm area — achieved through a larger driver size and expanded effective radiating surface — significantly boosts sound output and clarity.
Directional sound delivery, focusing audio straight into the ear
Dual drivers effectively isolate environmental sound, while the transmitter precisely captures speech, forming a powerful end‑to‑end closed‑loop noise‑reduction system.
Ultra-Long Battery Life
Powered by a built-in 3500mAh rechargeable lithium battery, the E201K offers up to 53 hours of continuous use, making it perfect for all-day tours, classroom instruction, and more
Battery capacity
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mAh
Working hours
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hours
Versatile Applications
Factory tours
Construction sites
Outdoor settings
High traffic tourist attractions
Product parameter
| Weight | 146g |
| Working hours | 53 hours of continuous use |
| Transmission Distance | ≤650ft/200 meter (in open area) |
| Battery capacity | 3500mAh |
| Dimension | 160mm*40mm*40mm |
Recommended tour guide systems for different level noise environments:
Compatible with All Indoorlink Receivers
| Compatible Receivers | Model | Highlights | Battery Life | Weight | Size | Sterilization Technology |
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E103 | Classic model with all-day comfort and reliable performance | Up to 20 hours | 11g | 47.2x15x12.7mm (exclude earhook) | UV-C sterilization systme |
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E103 Max | Long-range & ultra-long battery life for extended use | Up to 40 hours | 18g | 55x21x14mm (exclude earhook) | UV-C sterilization systme |
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E106 Pro | High-volume output Superior sound clarity for large groups | Up to 15 hours | 13g | 55x46x13mm | UV-C sterilization systme |
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E106 Lite | Cost-effective option with vibrant colors for high visibility | Up to 35 hours | 13g | 55x46x13mm | UV-C sterilization systme |
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E105 Pro |
1、Single or Dual wear; 2、16.2mm Large Speaker Coil Unit; |
Up to 16 hours | 12.4g | 43×20.7×12.8mm | UV-C sterilization systme |
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E105 Pro Plus |
1、Single or Dual wear; 2、16.2mm Large Speaker Coil Unit; 3、Independent Audio Amplifier; |
Up to 10 hours | 12.6g | 43×20.7×12.8mm | Integrated UV(Ultraviolet)+Ozone system |
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E105 Ultimate |
1、Single or Dual wear; 2、16.2mm Large Speaker Coil Unit; 3、Independent Audio Amplifier; 4、Long-lasting Antibacterial Material; 5、Exib Ⅱ CT4(Explosion-proof Certificaton) |
Up to 11 hours | 12.8g | 43×20.7×12.8mm | Integrated UV(Ultraviolet)+Ozone system |
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E090 | Ultra-lightweight & comfortable with detachable earhook | Up to 18 hours | 9.5g | 56x17x9mm (exclude earhook) | UV-C sterilization systme |