The Evolution of tour guide systems, One system, Unlimited possibilities

IndoorLink tour guide system designed for dynamic group tours and collaborative presentations, supports up to 5 Speakers Simultaneously, no audio switching delay. With flexible setups, the same system scales from a single guide to a team of five, and can be quickly split into independent groups as needs change—delivering clear, high fidelity guidance to every listener.

Multiple Speakers, Host & up to 4 Guests,
enabling seamless collaboration between multiple guides

Support complex scenarios like panel discussions, multi-expert site visits, or large-scale training

The transmitters can also be configured for one, dual, or five setups—scaling to support up to five concurrent presenters.

Seamless Collaboration for Teams of Presenters

Whether you’re running bilingual tours, hosting panel discussions, or conducting safety briefings with multiple instructors, multi-transmitter capability ensures flexible group management, real-time communication, and an inclusive experience for every listener.

Up to 5 simultaneous speakers

Flexible Group Management, the primary presenter to centrally manage co-presenters

Offers multiple usage modes (Handhold/headworn Style)

Fully compatible with all IndoorLink receivers

Multi-transmitter capability ensures flexible group management, real-time communication, and an inclusive experience for every listener.

The Evolution of Tour Guide System, Multi-Speaker Guided Experiences

Handheld-Multi-Speaker-Transmitter-5-1

Breaking beyond the limits of traditional dual-speaker systems, we’ve pioneered a 5-speaker solution, Multi-Speaker guided experiences.

The lead presenter controls and manages all speakers remotely, while four co-presenters deliver expert commentary, enriching every moment—and enabling audience interaction like never before.

Centralized Audio Control Platform

The Lead Presenter in Full Command. With centralized management, the lead presenter remotely monitor and manage all co-presenters’ device status in real time, for seamless coordination and professional-grade delivery.


Long-Range, Stable Communication Up to 120 meters

Ideal for use in complex spaces

Crowded environments

long-range guided tours

Two Secondary Transmitter Options—Tailored to Your Needs

Handheld Multi-Speaker Transmitter - Slave Unit

Model: SCHL-E201ML

Recommended Secnorios：Conferences, speeches, and lectures

1、30 Hour Ultra-Long Battery Life. perfect for full-day tours.

2、120m Stable Range & Strong Anti-Interference. Maintain clear audio even in complex environments.

3、Ergonomic Handheld Design. Comfortable grip and intuitive controls for effortless operation.

Lavalier Multi-Speaker Transmitter – Slave Unit

Model: SCHL-E204ML

Recommended Secnorios：Outdoor activities and hands-on demonstrations

1、Ideal for hands-free use in dynamic settings.

2、Built in microphone delivers clear audio with excellent long-distance pickup.

3、120m Reliable Connection Stable performance in indoor and outdoor environments.

4、Clip-On Design for Easy Wear. Lightweight and discreet—wear it on collars, lapels, or uniforms across diverse scenarios.

Three Flexible Secondary Transmitter Configurations to Suit Your Need

Option 1

Four lavalier transmitters

Ideal for high-mobility scenarios requiring hands-free operation

Option 2

Four handheld transmitters

Best for professional, formal settings

Option 3

A mix of lavalier and handheld transmitters

Balancing flexibility and reliability，offering the best of both choice

Flexible switching between single- and multi-presenter modes to suit any setting

Seamlessly Switch Between Single- and Multi-Speaker Modes

Primary and secondary units can work as same group or individual separate groups, enabling rapid mode changes for different scenarios.

Primary Transmitter – Handheld Style, Sleek, Professional Design

Integrated antenna and a sleek, all-black finish deliver a refined, professional look.

High-resolution LED display features a clean, intuitive interface,making operational status instantly visible.

Ultra-slim, lightweight body can be comfortably held in hand or worn around the neck with the included lanyard.

Compatible with All Indoorlink Receivers

Receiver Comparison Table

Compatible Receivers Model Highlights Battery Life Weight Size Sterilization Technology
E103 Classic model with all-day comfort and reliable performance Up to 20 hours 11g 47.2x15x12.7mm (exclude earhook) UV-C sterilization systme
E103 Max Long-range & ultra-long battery life for extended use Up to 40 hours 18g 55x21x14mm (exclude earhook) UV-C sterilization systme
E106 Pro High-volume output Superior sound clarity for large groups Up to 15 hours 13g 55x46x13mm UV-C sterilization systme
E106 Lite Cost-effective option with vibrant colors for high visibility Up to 35 hours 13g 55x46x13mm UV-C sterilization systme
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
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
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 11hours 12.8g 43×20.7×12.8mm Integrated UV(Ultraviolet)+Ozone system
E090 Ultra-lightweight & comfortable with detachable earhook Up to 18 hours 9.5g 56x17x9mm (exclude earhook) UV-C sterilization systme

Product parameter

Multiple Spearker Transmitter
Model Primary Transmitter SCHL-201M Secondary Transmitter Handheld Style SCHL-201ML Secondary Transmitter Handheld Style SCHL-204ML
Weight 55g 55g 25g
Working hours 11 hours of continuous use 30 hours of continuous use 8hours of continuous use
Transmission Distance 400ft / 120meters (in open area) ≤ 400ft / 120meters (in open area) ≤ 400ft / 120meters (in open area)
Dimension 52mm*120mm*12mm 52mm*120mm*12mm 42mm*46mm*14mm
Channel 999+ 999+ 999+