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HA-MIC04

AI Voice Recorder with WiFi​

MIC04

Table of Contents​

  1. Product Overview
  2. App Download
  3. Pairing & Connection
  4. Button Controls
  5. Operational States
  6. LED Indicators
  7. Power Management
  8. Modes of Operation
  9. WiFi Configuration
  10. Firmware Update
  11. FAQ (Frequently Asked Questions)
  12. Experimental Features

Product Overview​

The HA-MIC04 is an AI-powered voice recorder with WiFi capabilities, designed for seamless voice interaction and recording.

📦 What's in the box?

  • 1 x HA-MIC04 Device
  • 1 x Type-C Charging Cable

📄 Technical Specifications:

FeatureDetails
Product NameAI Voice Recorder
WiFi StandardIEEE802.11 b/g/n
Bluetooth VersionV5.3
Transmission Frequency2.4-2.48 GHz
Transmission Distance10 m
Storage Capacity1GB SD NAND
FeedbackBuzzer + Vibration motor
Charging InterfaceType-C
Charging Voltage5V / 1A
Charging Time0.5 hours
Talk Time~70 hours
Standby Time~2000 hours
Battery Capacity3.7V, 650mAh
MaterialAluminum Alloy + PCBA
Net Weight36g
Dimensions65 × 22.6 × 16 mm

App Download​

Download the Hearit.AI app from:

Alternatively, search for "Hearit.AI" in Google Play Store or Apple App Store.

Pairing & Connection​

  1. Launch the app and create an account or sign in.
  2. Select your language.
  3. Long-press the front button for 3 seconds to power on the device.
    • Confirmation: Buzzer sound + steady blue LED.
  4. Enable Bluetooth on your phone and select your device in the app. Add Your Device
  5. Tap "Start Using" to enter the main interface.

Button Controls​

Front Button (Main Control)​

Power On/Off​

  • Long-press (3 seconds):
    • Turns the device on/off.
    • Feedback: Buzzer sound + steady blue LED (when powered on).

Start/Stop Recording​

  • Single press:
    • Starts or stops recording.
    • Feedback: Short vibration + single beep.
    • LED Status:
      • Blue (low): Not recording.
      • Blue (high): VAD (Voice Activity Detection) inactive.
      • Purple: VAD active (recording mode with audio input).

OTA Updates​

  • Press 5 times quickly:
    • Checks for firmware updates.
    • LED Status:
      • Steady yellow: Checking for updates.
      • Flashing yellow: Update in progress.
      • Flashing red: WiFi issue or update failed.
      • Flashing white: No updates available.

Factory Reset​

  • Press 3 times quickly, then hold:
    • Resets the device to factory settings.

Firmware Update Mode​

  • Press 5 times quickly, then hold:
    • Enters firmware update mode.

Side Button (Mode Switch)​

Switch Modes​

  • Single press: Cycles through modes:
    • Translation Mode 🌍
    • Meeting Mode 📓
    • Custom Mode 🤖
    • Note-Taking Mode ✍️
  • Confirmation:
    • Voice prompt via app + short vibration.

Operational States​

Basic Controls​

#FunctionPreconditionStepsExpected ResultBuzzer FeedbackLED Status
1Power OnDevice in sleep modeClick front/side buttonDevice wakes up & broadcasts BLENoneRed/Blue alternating flashes (3x)
2Power OnDevice awake, BLE disconnectedClick/hold front/side button"BLE disconnected" prompt2 short beepsRed flashes every 0.5s (2x)
3Sleep ModeDevice awake, BLE disconnectedWait >5 minutesDevice enters sleep modeNoneNone
4Pairing SuccessBLE disconnectedPaired with appPairing completedNoneBlue flashes every 0.8s (3x)
5Start/Stop RecordingBLE connectedClick front buttonAudio streams to app1 short beepBlue solid (recording)
6Switch ModeBLE connectedClick side buttonMode changed via appNoneBlue flashes once
7TTS PlaybackBLE connectedHold side buttonApp announces current modeNoneBlue flashes once
10BLE DisconnectBLE connectedPhone disconnectsConnection lostNoneRed flashes every 0.5s (3x)
11ReconnectBLE disconnected, app activeBluetooth enabledAuto-reconnect to phoneNoneBlue flashes every 0.8s (3x)
12Low Battery AlertDevice in useBattery ≤10%Alert every 1 minute1 long beepRed flashes every 0.8s (2x)
13ChargingDevice chargingUSB-C connectedCharging activatedNoneGreen solid
14Fully ChargedBattery 100%USB-C connectedCharging completedNoneGreen LED off

LED Indicators​

StateLED PatternMeaning
Power OnRed/Blue alternating flashes (3x)Device waking up
BLE DisconnectedRed flashes (2x, 0.5s interval)Connection lost
Pairing SuccessBlue flashes (3x, 0.8s interval)Pairing successful
RecordingBlue solid / Purple (VAD active)Recording active
Mode SwitchBlue flash (1x)Mode changed
Low BatteryRed flashes (2x, 0.8s interval)Battery ≤10%
ChargingGreen solidCharging in progress
Full ChargeLED offCharging complete
OTA UpdateYellow steady/flashingUpdate in progress
Factory ResetRed steadyReset in progress

Power Management​

Charging​

  • Interface: USB-C port
  • Status:
    • Charging: Green LED solid
    • Full: LED turns off

Low Battery Alert​

  • Trigger: Battery ≤10%
  • Reminder:
    • One long beep every minute
    • Red LED flashes every 0.8s, twice

Modes of Operation​

Translation Mode 🌍​

  • AI-powered translation with voice output
  • Auto-detects spoken language
  • Great for international conversations

Meeting Recorder 📓​

  • Record meetings with high-quality audio
  • Convert speech to text with accuracy
  • Get organized meeting summaries

Custom Model 🤖​

  • Add your own AI instructions
  • Choose from ready-to-use models
  • Adapt to different scenarios

Note Taking Mode ✍️​

  • Speak your tasks naturally
  • Auto-organize into categories
  • Smart deadline detection

WiFi Configuration​

1. Connect to WiFi Configuration Portal​

  1. Visit https://hearit.ai/wifi/ in your web browser
  2. Enter your WiFi network name (SSID) and password
  3. Important: Make sure your WiFi network operates on the 2.4GHz frequency band
WiFi Configuration Portal

2. Connect Your Device​

  1. Click "Start Configuration"
  2. When prompted, search for and connect to your MIC04 device
Device Connection

3. Transfer WiFi Credentials​

The website will automatically transmit your WiFi credentials to your MIC04 device

Transferring WiFi Credentials

Firmware Update​

Regular firmware updates ensure your HA-MIC04 device operates with the latest features and optimizations. This section explains how to update your device's firmware over-the-air (OTA).

Prerequisites​

  • Your MIC04 device must be connected to a 2.4GHz WiFi network
  • Ensure your device has at least 50% battery charge
  • Make sure the device is within good WiFi signal range

Update Procedure​

1. Configure WiFi Connection​

Before updating firmware, make sure your device is properly connected to WiFi by following the WiFi Configuration instructions above.

2. Initiate Firmware Update​

  1. Ensure your device is powered on and connected to WiFi
  2. Quickly press the Front Button 5 times in succession
  3. The device will automatically check for available updates

3. Monitor Update Progress​

The LED indicator provides real-time feedback on the update process:

LED StatusMeaningAction Required
Steady YellowChecking for updatesWait while the device connects to the update server
Flashing YellowUpdate in progressDo not turn off or reset the device during this process
Flashing RedWiFi issue or update failedCheck your WiFi connection and try again
Flashing WhiteNo updates availableYour device already has the latest firmware

4. Update Completion​

When the update process completes successfully:

  • The device will automatically restart
  • The LED will return to its normal state
  • Your device will be ready to use with the latest firmware improvements

Troubleshooting​

If your firmware update fails (indicated by flashing red LED):

  1. Check that your WiFi network is operating on the 2.4GHz band (5GHz is not supported)
  2. Ensure your WiFi signal is strong where the device is located
  3. Verify your WiFi network has internet access
  4. Try moving closer to your WiFi router
  5. Restart your device and try the update process again

FAQ (Frequently Asked Questions)​

  1. How do I switch between modes?

    • Press the side button once to cycle through available modes.

  2. What happens when the battery is low?

    • Device will provide voice and LED alerts every minute when battery is ≤10%.

  3. How do I update the firmware?

    • Press the front button 5 times quickly to check for updates.

  4. What should I do if the device doesn't connect?

    • Ensure Bluetooth is enabled on your phone.
    • Try resetting the device by pressing the front button 3 times quickly, then hold.

Experimental Features​

  • Several experimental features are available in the web-demo version.
  • Web-demo supports Windows, macOS, Android (iOS not supported).
  • Access via webdemo.hearit.ai.