eMotion Max Product Guide

This eMotion Max guide consolidates the product help articles and copied LinknLink knowledge-base content into one local Shopify article.

2. Product Guide

📂 eMotion Max

Part 1. Overview

Indicator Light Status

Reset for Setup

When the device is not in setup mode, take out the reset pin and use it to press and hold the Reset Button for 5s until the LED indicator flashes intermittently. https://youtu.be/kVKegoAnjW4?si=0Y1ttEyE4yPylwGp

Part 2. Installation steps

2-1 Orientations

The standard orientation is with the power cable facing downwards, but it can also be installed with the power cable facing upwards.This can be set in the App.

2-2 Wall Mounting

It is recommended to use the bracket for wall mounting installation, as it is easier for angle adjustment than sticking the sensor directly on wall.

2-3 Desktop Standing

Use the bracket to place it on desktop as it allows for easy angle adjustment.

Note

When installing the eMotion Max, please follow these guidelines to ensure optimal performance and avoid potential interference:

• Affix it to the wall or position it vertically on table for a wider detection range.

• Pointing it towards persons will help achieve more accurate detection.

• Keep it away from power cables, adapters and power outlets.

Keep it away from strong magnetic fields or radio radiations.

Avoid placing it near other electronics.

Do not place it behind metal objects.

Avoid pointing it to mirrors or other smooth surface to reduce signal reflection.

2-4 Requirements

A smartphone or tablet running iOS 9.0/Android 5.1 or above.

A 2.4GHz Wi-Fi network with Internetaccess.

Make sure the device is on and the blue LEDindicator is flashing intermittently

Get the App

Connect your smartphone to your homeWi-Fi network (2.4GHz only). Open your phone's camera, point it at the QR code, download the latest "LinknLink' APP from the App Store or Google Play, and install it on your smart phone.

Part 3. Log in to the App

Open the LinknLink APP, click on the server selection in the top right corner, then click on "LinknLink Account" and log into your cloud account. If you don't have an account, click "Sign up" to create a new one.

Part 4. Add Device

1. Add eMotion

Power on the eMotion, making sure the indicator light is Flashing intermittently in blue. Turn on your phone's Bluetooth service, clickon the "+" in the top right corner -"Add device" -"Add a new device"-"eMotion series device" - "eMotion". The APP will start to automatically scan for nearby eMotion devices, which may take up to 10 seconds.

2. Connect eMotion to Wi-Fi

Select your home Wi-Fi network, enter the password and click "Connect now"the LED indicator will flash slower and then turn off. Device is successfully connected. Choose a room and name the device!

Part 5. Use eMotion Sensor

1. View Status & History

In the LinknLink App, click on the eMotion device, you can check the real-time occupancy status (Person Detected, NoPerson or Continuous No Person) and quick history for last 24 hours. You can click "History Records" to view previous history for last 1 month.You can click '"..." > "Export Data" and input your email to get a full history record.

You can set the "Security Time" and enable"Alert Notification" for intrusion alert. A warning sign will be displayed on devicepage, and you will also receive a push notification if person is detected during the security time.

2, Add Widget on Phone

For Android/i0S widgets, on the phone firstly find and select the LinknLink App widget. Then from the device card, select the human radar sensor. After adding the widget to the phone's home screen, long press on it to configure.

Part 6. Query Data with Modbus TCP

Click "..." > "Modbus" to set a fixed lPad dress for eMotion and find Modbus register address. Use your custom software to query current sensor status via Modbus TCP protocol.

Part 7. Use Alexa / Google Home

1. Link to LinknLink skill

If you're already logged into the Alexa or Google Home APP, you can now directly link to the LinknLink skill. On the App homepage, click on the "+" inthe top right corner and select "AddVoice Assistant "Select "Alexa" or "Google Home", then click"Link Now".

2. Complete and Discover Devices

You will be redirected to the Alexa / GoogleHome App and click "Link" to complete this process. After successfully discovering the device. you will be able to control the device through the Alexa /Google Home APP or speaker.

Part 8. Home Automotion

Use the "Routines" in LinknLink App, the sensors in eHub can be used as trigger conditions, and the remote control can be used as execution device. Ex. turn off the heater when the room is continuously unoccupied Similarly, use the "Routine" in Alexa /Google Home to set up the automation you need.

5. More Guides

📑 eMotion Comparison

Notes:

1）Motion2MQTT: Can report human detection locally to Home Assistant via MQTT 2) IR2MQTT: Can control IR locally from Home Assistant via MQTT to Applicance 3). Matter: will support in near future

Radar Module

We sincerely thank our eMotion Max users for their support and invaluable feedback! We have always placed user experience at the core of innovation. In response to concerns about "limited detection range" raised by some users, our team dedicated months to systemic improvements—from antenna physics to signal processing architecture. Today, we proudly introduce eMotion Ultra, featuring the revolutionary upgrade of our second-generation 60GHz mmWave radar module ADTM6101PJDM41P02, designed by the LinknLink team!

Core Advancements in This Upgrade

1. Antenna Design Optimization: Focused Energy, Extended Range

• Redesigned 2T2R Microstrip Antenna Layout The second-generation module adopts an upgraded dual-transmit dual-receive (2T2R) PCB antenna structure. By optimizing radiation directivity and beam concentration, signal scattering is reduced by 30%, significantly enhancing effective detection range.
• Multipath Interference Suppression Improved antenna alignment minimizes environmental reflections, concentrating radar wave energy on target areas and boosting weak signal capture at long distances.
• Wide Beam Angle Adaptability Retaining the ±60° horizontal/vertical beam coverage, we enhanced edge-region sensitivity through optimized impedance matching, eliminating blind spots in corners and low-ceiling spaces.

2. Transmission Power & Efficiency: Stability Meets Strength

• Enhanced Effective Radiated Power (ERP) While maintaining a 12dBm standard transmission power, refined RF front-end circuitry reduces transmission loss, achieving a 20% increase in ERP.
• Advanced Power Stability A low-ripple (≤50mV), high-response power management system ensures stable output in complex environments, preventing performance degradation from voltage fluctuations.

3. Algorithm-Hardware Synergy: Precision Redefined

• FMCW Signal Processing Upgrade Leveraging the ARM® Cortex®-M3 core, our enhanced processing unit combines improved FMCW signal analysis algorithms to accurately detect static and micro-motion targets, reducing false alarms.
• Environmental Anti-Interference New dynamic interference masking (via GUI-configurable zones) automatically filters fixed noise sources like AC units and fans, ensuring reliable detection.
• Optimized Low-Power Mode Intelligently switches to 1T1R mode in unoccupied scenarios, slashing power consumption to 2.5mA while enabling full-performance detection within 50ms of motion triggers.

4. Integrations

📑 eMotion2MQTT (HA)

1. Prerequisites

Ensure that your MQTT broker is correctly configured on your gateway or server.

• For iSG HA users, the MQTT service and integration come pre-installed with default settings.
• For other existing HA instances, you must manually install the Mosquitto MQTT broker service from Add-Ons and add the MQTT integration. If you need guidance on how to install it, refer to this video: https://youtu.be/dqTn-Gk4Qeo
• For non-HA systems, set up a compatible MQTT broker.

2. eMotion MQTT Settings

1) Enter the eMotion device interface, click on the top right corner “...”, and select “MQTT connection” from the drop-down menu to enter the MQTT settings page.

2) MQTT Settings Interface Parameter Description：

◼ IP Address(URL): Enter the IP address of your host, for instance 192.168.1.5

◼ Port Number: For MQTT Broker, the default port is 11883.

◼ Username & Password: Enter the username and password for your MQTT broker (only alphanumeric characters are allowed).

For iSG HA, both fields can be left blank if the default MQTT integration is used.

3) Then click save at the top right corner.After saving, you can revisit this page to check whether the MQTT connection is successful.

3. For example

For example, to report our device to Home Assistant (HA) via MQTT, you can refer to the following steps:

• Ensure the MQTT integration is added to your HA.
• Navigate to the device page in the LinknLink app (click the "..." menu in the top-right corner of the device page, then select "MQTT Connection").
• Enter the account and password for your MQTT broker in Home Assistant. The default setting is port number 11883, with the account and password fields left blank.

• Once the "MQTT Connection Status" displays "Connected", the MQTT connection is successfully established.
• A new device will automatically be created in your HA instance, syncing the status directly from the device.

For motion sensors, you can adjust the "No-Person Delay" time on the device page in the LinknLink app to modify the delay time for status updates. 

Setup Video

https://www.youtube.com/watch?v=HM5N3zuJLmA

MQTT Connection Troubleshooting

Step 1: Credential format

• Username/password must be alphanumeric only (A–Z, a–z, 0–9), with no spaces or special characters.
• If special characters were used before, update both the broker and the device to a new alphanumeric pair.

Step 2: Confirm the MQTT broker

1. In HA: Settings → Devices & Services → Add Integration → search “MQTT” → Configure.
2. Success indicates the Broker IP, port, and credentials are correct.
3. On failure:HA OS: install and enable Mosquitto broker from the Add-on Store;Other setups: ensure Mosquitto is running and listening on 1883 (when TLS is off).

Step 3: Verify network connectivity (device ↔ HA)

1. Add the Ping (ICMP) integration in HA and enter the LinknLink device IP;
2. connected means same LAN/reachable;
3. If it fails: check different subnets/VLANs, AP isolation/guest network, or router/firewall rules blocking internal traffic.

Step 4: Enter MQTT settings on the LinknLink device by using LinknLink App

• Broker IP, port (1883 by default), username/password;
• Save and Check HA MQTT integration device list

Step 5: Confirm HA receives messages

1. Open Developer Tools → MQTT (or the MQTT integration’s Listen to a topic);
2. In Topic, enter home/# → Start listening;
3. If you see topics/payloads from the device, the connection and messaging are good.

Step 6: Deep-dive with MQTT Explorer (optional)

1. Download MQTT Explorer from https://mqtt-explorer.com/;
2. In Connections, add a profile with name, Host (broker IP), Port (usually 1883), and credentials;
3. Save → Connect to browse the full topic tree for easier troubleshooting.

Once these checks pass, the LinknLink device should connect to MQTT without issues.

3. Settings

Firmware Update

⚠️ Important Notes:

• Make sure to confirm your device model before using the upgrade link below. Upgrading with the wrong firmware may cause the device to become inoperable. - eMotion Pro : Devicetype: 44217, PID: 000000000000000000000000b9ac0000 - eMotion Max 1: Devicetype: 44190, PID: 0000000000000000000000009eac0000 - eMotion Max 2: Devicetype: 44246, PID: 000000000000000000000000d6ac0000 - eMotion Max 3: Devicetype: 44254, PID: 000000000000000000000000deac0000 - eMotion Ultra: Devicetype: 44188, PID: 0000000000000000000000009cac0000
• If the online update fails, you can use your phone's hotspot Wi-Fi for device pairing: Enable your mobile hotspot and verify the Wi-Fi name and password.On iPhone, go to hotspot settings and enable “Maximize Compatibility” to support 2.4GHz Wi-Fi.Update your LinknLink App to the latest version.Ensure the device connects to the same mobile hotspot used by the LinknLink App.

🔧 Manual Update Steps:

• Open the LinknLink App, select the eMotion device you want to update, and confirm the device model on the device info page.
• Tap the ... three-dot menu in the upper right corner and select Settings.
• Tap Firmware Update, then click the URL button in the top right corner of the update page. Paste the correct firmware upgrade link for your device model.
• Tap OK to begin the upgrade. If the update fails or an error occurs, please contact us on our Discord server and mention @LinknLink Official for support. https://discord.gg/SstkRMxnT8

Firmware Update Link

6. FAQ

FAQ

1. Difficulty in pairing with Wi-Fi router

1) LinknLink APP cannot connect to the device's Bluetooth

• Confirm that the device is in pairing mode and the LED indicator light flashes intermittently. If the LED indicator light flashes slowly, you need to press and hold the reset button until the indicator light flashes intermittently to reset the device. Please watch the video of LED indicator flashes intermittently, https://youtu.be/kVKegoAnjW4?si=0IuRpmI8-NV8MfPz
• If the device is in the network configuration state, but still cannot connect to the device Bluetooth, you need to kill the LinknLink APP, then open it and enter the device configuration page

2) Setup stalls on "Verifying device info on cloud "

• Check the LED indicator status of the device. If it is still flashing intermittently, it means that the App has not successfully passed the Wi-Fi configuration information. Log out of the LinknLink APP, and longin the APP, try to setup device again.
• If the device LED indicator is off, it means that the device is connected to Wi-Fi, but cannot connect to LinknLink Cloud through the Internet for device verification. You need to check the network settings of the router to see if there is a whitelist or other configuration to ensure that the device can access the Internet normally.

2. Unable to upgrade device firmware

When upgrading the firmware, I always encounter the situation that the upgrade fails. You can use local upgrade instead. For specific methods, please refer to:

https://kb.linknlink.com/kb/smart-home-devices/updates/local-upgrade

3. Cannot be used after upgrading the firmware

After the device firmware is upgraded, you need to clear the cache of LinknLink App to obtain the latest control program. Go to LinknLink App - Settings - Clear App Cache

4. Why is my eMotion presence status not showing up correctly on Alexa or Google?

• I have configured the eMotion device correctly, and the LinknLink App shows that the device is running normally.
• I have set up zones and named them

I have completed these two steps, but I still can't see the device in Alexa or Google Home. Because you skipped naming sub-devices in the initial configuration wizard, you cannot see the device in Alexa. Please follow the steps below to help name the sub-devices. 1）Go to LinknLink App and select "Presence" 2) Click top right " ... ", select "Settings" 3) Click Name Sub-Functions, named "Any Presence" and "Zones" 4) You should be able to see the motion devices in Alexa

5. Why does eMotion Pro still detect presence from its sides or back?

The eMotion Pro uses a 24GHz radar sensor designed to prioritize forward detection. However, due to its wide radar coverage pattern, it may occasionally detect presence within a ​very close range (typically <1 meter) at its sides or back. Additionally, if mounted on ​wooden or plastic walls, the radar signal can penetrate these materials, potentially sensing movement behind the wall in proximity.

To minimize unintended detections:

1. ​Adjust Zone Placement: Set detection zones ​farther away from the sensor in the app. Avoid using zones close to the sensor’s sides/back for critical automations.
2. Optimize Sensitivity: In environments prone to false triggers (e.g., near thin walls or tight spaces), reduce the sensor’s sensitivity to ​Low via the app settings.
3. Review Automation Rules: Ensure automations (e.g., lights, alerts) are tied only to activity within your defined zones, not the sensor’s default detection range. These adjustments help balance reliable detection while reducing false triggers from peripheral areas. For further assistance, contact our support team.

6. The app prompts me to upgrade the firmware, but the update keeps failing. What should I do?

If the OTA firmware upgrade fails, please follow the steps below to resolve the issue:

✅ 1. Download the latest version of the LinknLink App (Android recommended)

The latest Android and iOS apps are still under review in the app stores. We recommend manually installing the most recent Android version using the link below:

🔗 Download the latest LinknLink App (Android)

✅ 2. Try the standard OTA upgrade process

• Open the app and connect to your eMotion Max device.
• Tap “Upgrade Firmware” and wait for the process to complete.
• If the upgrade fails, please take a screenshot or note the error message and send it to our support team at [email protected]
• Most failures are due to router limitations that block the app from sending the upgrade instruction to the device (e.g., LAN isolation, broadcast filtering, or firewall settings).

✅ 3. Use a mobile hotspot to bypass router issues (recommended)

If the update continues to fail through your home Wi-Fi:

1. Enable the mobile hotspot on your phone and create a simple 2.4GHz Wi-Fi network.
2. Reset the eMotion Max and re-pair it to this hotspot using the LinknLink App.
3. Once connected, try the firmware upgrade again—it should complete successfully under most conditions.

For additional help, please join our technical support community: 🔗 LinknLink Discord Community