EJEAS MS20 Mesh Group Intercom System User Manual

Product Overview

The EJEAS MS20 is a Mesh Group Intercom System designed for clear and reliable communication. It supports various modes including Mesh Intercom, Bluetooth Intercom, mobile phone connectivity, and FM radio.

For more information and other languages, please visit www.ejeas.com.

Product Details

The device features an integrated antenna and an LED indicator light (Blue, Red, Green).

Key components include:

• M Button
• Volume - button
• Phone/Power Button
• Volume + button
• USB Charging Interface / Headphone Jack

The system offers several functionalities represented by icons:

• [MS20 Intercom icon]: MS20 Intercom
• [Bluetooth Intercom icon]: Bluetooth Intercom
• [Music Share icon]: Music Share
• [Auto Phone Answering icon]: Auto Phone Answering
• [Voice Assistant icon]: Voice Assistant
• [FM Radio icon]: FM Radio
• [Support EUC Remote icon]: Support EUC Remote
• [Support Mobile App icon]: Support Mobile App

Product Operation

Operation Diagram

The device supports various button press actions:

• Click: A single, quick press.
• Double-click: Two quick presses in succession.
• Long-press: Press and hold for a duration. Specific durations are indicated as [1 second press], [2 second press], and [5 second press].

Basic Operation: Power ON/OFF

Please charge the device before use.

Power ON: Long press the Phone/Power Button for approximately 1 second. The blue light will flash, accompanied by a voice prompt.

Power OFF: Long press both the Phone/Power Button and the M Button. The voice prompt will say "Power off", and the indicator light will turn off.

Reset: The device will automatically power off while charging. It can be used while charging after being powered on.

Battery and Charging Indication

Low Battery Indication: When the battery is low, the red light flashes twice with the voice prompt "Low Battery". If the battery is extremely low, the device will automatically power off.

Charging Indication: The red light is always on when the device is using USB charging.

Battery Inquiry: After connecting to a phone via Bluetooth, the battery level can be seen on the phone's Bluetooth icon.

Mesh Intercom

The Mesh Intercom is a multi-hop technology mesh network intercom operating on the 470-488MHz frequency band. It allows for a large number of participants and unrestricted location, enabling users to move freely within the effective range. This system offers superior performance compared to traditional Bluetooth chain intercoms, providing longer transmission distance and better anti-interference ability.

Features:

• Supports intercom with up to 20 people.
• Features 5 channels in total.
• Voice can be relayed, and teams have a maximum communication distance of approximately 2 kilometers.
• In campaign mode as a listener, there is no limit to the number of people who can join the intercom in a listen-only manner.

When entering the Mesh network, Bluetooth music can be played simultaneously. When someone speaks, the system automatically switches to Mesh intercom. If no one speaks for a period, it will automatically resume playing music.

Microphone Mute

When using Mesh Intercom, you can mute the microphone by a short press of the M Button. This prevents your voice from being sent to others.

A short press of the M Button will toggle mute:

• Mute: Voice prompt "Microphone Mute".
• Unmute: Voice prompt "Microphone unmute".

VOX Voice Sensitivity

When using Mesh intercom, the system enters a sleep mode when no speech is detected. Speaking immediately activates the system and starts the intercom. Users can adjust the voice activation sensitivity to suit their voice and avoid false activations or the need for excessively loud sounds.

There are 5 levels of sensitivity settings, with level 3 being the default. Level 5 offers the highest sensitivity, making activation easiest, while level 1 has the lowest sensitivity.

To cycle through sensitivity levels, after turning on Mesh intercom, press and hold the M Button + Volume +. The levels cycle from 1 to 5 and back to 1. A voice prompt "{VOX n}" (where n is 1-5) will indicate the current level.

Pairing Steps as Members

To become a member of the intercom team:

1. All devices first enter the intercom pairing state. Long press the M Button (approximately 5 seconds) until you hear a prompt and the red and green lights flash alternately. The prompt will be "Mesh Pairing".
2. Take one of the devices to act as the paired server. Press the M Button. You will hear a beep, and the red and green lights will flash alternately. The prompt will be "Bi".

Wait for a moment. A "Pairing Successful" prompt from all devices indicates successful pairing.

After a few moments, you will hear the prompt "Channel n, xxx.x megahertz" from all intercoms, signifying that communication can begin.

Intercom Reconnection

When powering on the intercom for subsequent use, short press the M Button. You will hear the prompt "Join the Mesh." After a moment, you will hear the prompt "Channel n, xxx.x megahertz", and you can communicate with others.

Turn off MESH Intercom

Press and hold the M Button (approximately 1 second) to turn off Mesh Intercom. The voice prompt will be "Mesh Close".

If the device is powered off without properly turning off the intercom, it will automatically restore the connection upon the next power-on.

Pairing Steps as Listeners

To join a team as a listener, other intercoms must have already been paired to form a team. The pairing steps are as follows:

1. Take the intercom to be paired. Enter listening mode pairing by long pressing the M Button + Volume - (approximately 5 seconds). The prompt will be "Listen Mesh Pairing", and the red and green lights will flash alternately.
2. Take an intercom that has already been paired as a server. Enter listening mode pairing for the server by pressing and holding the M Button + Volume - (approximately 5 seconds) to prompt "Listen Mesh Pairing". Note: Unjoined machines can only be joined again through the server.
3. Short press the M Button. You will hear a beep, and the red and green lights will flash alternately. The prompt will be "Du".

Wait a moment and hear "Pairing Successful" from all intercoms. After a few more minutes, you will hear "Channel n, xxx.x MHz". This indicates you have joined the intercom network and can communicate with others.

Intercom Channel Switching

There are 5 channels in total. Short press the M Button + Volume - or Volume + to switch channels forward or backward. It is important that the entire team uses the same channel to communicate.

The prompt for channel switching is "Channel n, xxx.x MHz".

Bluetooth Intercom

How To Pair With The Device

1. After powering on the device, press and hold the Phone/Power Button + Volume + (approximately 5 seconds) until the red and blue lights flash alternately. The pairing voice prompt will be "Intercom Pairing". Wait for connection to other intercoms.
2. The other intercom enters the pairing state using the same operation. After the two intercoms discover each other, one of them will initiate the pairing connection.

The connection is successful and the intercom begins, indicated by the prompt "Pairing Successful".

Intercom Mode Switching

1. When both Mesh intercom and Bluetooth intercom are enabled, if no one is speaking on the Mesh network (including yourself), the system will automatically switch to Bluetooth intercom.
2. When someone is speaking on the Mesh network (excluding yourself) while you are in Bluetooth intercom mode, Mesh will automatically preempt and switch to Mesh Intercom status, making Bluetooth intercom inactive.
3. When you are in Bluetooth intercom mode and wish to speak to others on the Mesh network, simply press the M Button to switch to Mesh intercom.

Pairing with The Old Models

For older models (V6/V4), simultaneously press and hold the Phone/Power Button + Volume + + M Button for approximately 5 seconds to start pairing. The red and blue lights will flash alternately, with the prompt "Intercom Pairing". Follow the specific instructions for your older model to enter the search and wait for successful pairing.

Intercom Connection

Indicated by the blue light flashing rapidly and the prompt "Intercom Connected".

Intercom Disconnection

Indicated by the prompt "Intercom Disconnected".

Pairing With Headsets or Other Branded Bluetooth Intercoms Search

Note: Compatibility with all Bluetooth headsets or intercoms on the market is not guaranteed.

1. Long press the Phone/Power Button + Volume + (approximately 5 seconds) until the red and blue lights flash alternately and the prompt "Intercom Pairing" is displayed.
2. Click again on the Phone/Power Button + Volume +. The voice prompt will be "Intercom Searching", and the red and blue lights will flash alternately.
3. At this point, the intercom is searching for other intercoms in the pairing state. When it finds another intercom, it will initiate the pairing.

Successful pairing is indicated by the prompt "Pairing Successful".

Mobile Phone Pairing

This intercom supports connection to mobile phones for playing songs, making calls, and waking up voice assistants. Up to 2 mobile phones can be connected simultaneously.

1. After powering on the device, press and hold the Phone/Power Button (approximately 5 seconds) until the red and blue lights flash alternately and the voice prompt "Phone Pairing" is heard.
2. Your phone will search for the device named "MS20" using Bluetooth. Click on it to connect.

Connection is successful, indicated by the blue light double flashing slowly and the prompt "Pairing Successful, Connected". The current battery level is displayed on the phone's Bluetooth icon (Mobile phone HFP connection required).

Bluetooth Reconnection With Mobile Phones

After switching on, the device automatically connects back to the last connected phone via Bluetooth. If there is no connection, click the Phone/Power Button to reconnect with the last mobile device that was connected via Bluetooth.

Mobile Control

Call Answering: When a call comes in, click the Phone/Power Button.

Call Rejection: When a call comes in, press and hold the Phone/Power Button for about 2 seconds.

Hang Up: During a call, click the Phone/Power Button.

Call Redial: When in standby or playing music, quickly double-click the Phone/Power Button.

Cancel Redial: Click the Phone/Power Button during redial.

Phone Priority

When a call comes in, it will interrupt Bluetooth music, FM radio, and intercom. The system will resume these functions after hanging up.

Priority Order: Incoming Calls > Interruptions > End > Resume. (This likely refers to how different audio sources are handled, with calls taking precedence).

Voice Assistant

When in standby or playing music, press and hold the Phone/Power Button. The available voice assistant commands depend on your mobile phone. Examples include:

• "Open Music"
• "Previous Song"
• "Next Song"
• "Call EJEAS"
• "Open Navigation"

Music Control

• Play/Pause: When music is playing, click the Phone/Power Button.
• Previous Song: Long press the Volume - button.
• Next Song: Long press the Volume + button.
• Volume Adjustment: Use the Volume - and Volume + buttons to adjust volume.

FM Radio

FM On/Off (76~108MHz)

After turning on the FM radio, it will automatically search for stations and play the found station. FM can be turned on during an intercom session, allowing you to listen to the radio while talking.

• Turn FM On: Press and hold Volume + + Volume - (approximately 1 second). The prompt will be "FM Radio".
• Turn FM Off: Press and hold Volume + + Volume - (approximately 1 second). The prompt will be "FM Radio Off".

Switching Channels

Short press the Volume - (approximately 2 seconds) to decrease the frequency (Frequency -).

Short press the Volume + (approximately 2 seconds) to increase the frequency (Frequency +).

Volume Adjustment

The FM radio has a total of 7 volume levels.

• When using FM alone: Adjust volume using Volume - and Volume +.
• When using FM + Intercom: Adjust volume using Volume - and Volume +.

Music Share

Share music played by your Bluetooth-enabled phone to another device. This function cannot be used during Bluetooth intercom or when two phones are connected simultaneously.

1. Take one intercom as the host and connect it to the phone. The other intercom acts as the slave.
2. Press the Phone/Power Button + Volume - simultaneously on both the host and slave to enter the music sharing search connection state. The prompt will be "Music Share".

After the connection is successful, play the phone music on the host. The music can also be played from the slave's speaker. The prompt will be "Music Share Connected".

To exit music sharing, press the Phone/Power Button + Volume - again. The prompt will be "Music Share Disconnected".

EUC Remote Controller (Optional)

Buttons Introduction

EUC Pairing

1. Press and hold the Phone/Power Button + Volume - for about 5 seconds to enter the pairing mode. The voice prompts "Remote Control Pairing", and the red and blue lights flash alternately. If pairing is not successful within 2 minutes, exit the pairing.
2. Press and hold the FM Button + Volume - on the handle for about 5 seconds to clear the record until the red and blue lights come on.
3. Click any button of the EUC.

Confirmation: "Pairing Successful". (If no successful pairing within 2 minutes, exit the pairing).

EUC Handle Operation

Mesh intercom reconnect/disconnect and mobile phone control are the same as on the main unit.

• Bluetooth Intercom Connection
• Bluetooth Intercom Disconnection
• FM On/Off

Restore Default Settings & Firmware Upgrades

Restore Default Settings

Press and hold the Phone/Power Button + Volume + + Volume - for about 5 seconds. The voice prompt "Restore Default Settings" will be heard, which deletes the pairing record and then automatically reboots the device.

Firmware Upgrades

Connect the device to your computer using a USB data cable. Download and open the "EJEAS Upgrade.exe" software. Click the "Upgrade" button to start the process and wait for the upgrade to complete.

Mobile App

Download and install the EJEAS SafeRiding mobile APP for the first time.

1. Press and hold the Phone/Power Button (approximately 5 seconds) until the red and blue lights flash alternately to enter phone pairing mode.
2. Open the APP. Click the Bluetooth icon in the top right corner. The interface will show the name of the intercom device searched. Select the intercom device to be connected and click to connect. (For iOS systems, you may need to enter phone pairing again via system settings > Bluetooth to connect audio Bluetooth).
3. The next time you use the APP, open it and click the Bluetooth icon in the top right corner. Select "Intercom" for connection from the paired devices.

The APP provides functions such as intercom group management, music control, FM control, device switch off, and authenticity checking.