1. Introduction
This user manual provides detailed instructions for the operation and maintenance of your Zebronics Zeb TRX211 Moving Monster Trolley Speaker. Please read this manual carefully before using the product to ensure proper functionality and to prevent damage.

Figure 1: Zebronics Zeb TRX211 Moving Monster Trolley Speaker
The Zebronics Zeb TRX211 is a powerful trolley speaker designed for portable audio. It features a retractable handle and wheels for easy transport, LED display and lights, and multiple connectivity options including Bluetooth, USB, Micro SD, FM, and AUX. It also includes a wireless microphone and supports voice recording via the mic input, along with TWS (True Wireless Stereo) functionality.
2. Safety Instructions
To ensure safe operation and prolong the life of your speaker, please observe the following safety precautions:
- Do not expose the speaker to water, moisture, or extreme temperatures.
- Avoid placing the speaker near heat sources such as radiators, stoves, or other heat-producing appliances.
- Do not block any ventilation openings. Ensure proper airflow around the speaker.
- Use only attachments/accessories specified by the manufacturer.
- Unplug the speaker during lightning storms or when unused for long periods.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
- Do not open the speaker casing. There are no user-serviceable parts inside.
3. Package Contents
Please check the box for the following items:
- DJ Speaker (1 unit)
- Remote (1 unit)
- Wireless Mic (1 unit)
- User manual (1 unit)
- Charging cable (1 unit)
- Input cable (1 unit)
4. Product Overview
Familiarize yourself with the various parts and controls of your Zebronics Zeb TRX211 speaker.

Figure 2: Rear Control Panel and Inputs
Key Controls and Ports:
- LED Display: Shows current mode and status.
- Echo (Min - Max): Adjusts the echo effect for the microphone.
- Mic Vol (Min - Max): Controls the microphone volume.
- Power ON/OFF: Main power switch.
- Volume (Min - Max): Adjusts the main speaker volume.
- Input DC-5V: Power input for charging.
- Bass (Min - Max): Adjusts the bass level.
- Treble (Min - Max): Adjusts the treble level.
- Mic Input: Port for connecting the wired microphone or wireless microphone receiver.
- Mode: Button to switch between input modes (Bluetooth, USB, Micro SD, FM, AUX).
- Next / Volume +: Skips to the next track or increases volume.
- Play / Pause: Plays or pauses audio playback.
- Previous / Volume -: Skips to the previous track or decreases volume.
- Aux / USB / Micro SD: Input ports for Auxiliary cable, USB drive, and Micro SD card.


Figure 3: Mic Stand and Bottom Features
The speaker features a convenient mic stand on the side for storing the wireless microphone. It also includes a bottom tripod stand mount for stable placement and trolley wheels for easy portability.
5. Setup
5.1 Initial Charging
Before first use, fully charge the speaker. Connect the provided charging cable to the "Input DC-5V" port on the speaker and the other end to a compatible USB power adapter (not included). The LED display may indicate charging status. Once fully charged, disconnect the cable.
5.2 Powering On/Off
Locate the "Power ON/OFF" switch on the rear control panel. Flip the switch to the "ON" position to power on the speaker. The LED display will light up. To power off, flip the switch to the "OFF" position.
5.3 Positioning the Speaker
For optimal sound, place the speaker on a stable, flat surface. Utilize the retractable handle and trolley wheels for easy movement. The bottom tripod stand mount allows for elevated placement using a compatible tripod (not included).
6. Operating Instructions
6.1 Mode Selection
Press the "Mode" button on the control panel or remote control to cycle through the available input modes: Bluetooth, USB, Micro SD, FM, and AUX.
6.2 Bluetooth Mode
- Power on the speaker and switch to Bluetooth mode. The LED display will show "BT" and a pairing indicator may flash.
- Enable Bluetooth on your mobile device (smartphone, tablet, etc.).
- Search for Bluetooth devices and select "ZEB-TRX211" from the list.
- Once paired, the speaker will indicate a successful connection, and you can now play audio from your device.
6.3 USB / Micro SD Mode
- Insert a USB flash drive or Micro SD card (with audio files) into the respective port.
- The speaker will automatically switch to USB/Micro SD mode and begin playing audio. If not, press the "Mode" button to select the correct input.
- Use the "Play/Pause", "Next / Volume +", and "Previous / Volume -" buttons to control playback.
6.4 FM Radio Mode
- Switch the speaker to FM mode using the "Mode" button.
- Press and hold the "Play/Pause" button to initiate an automatic channel scan. The speaker will scan and save available FM stations.
- Use the "Next / Volume +" and "Previous / Volume -" buttons to navigate between saved stations.
6.5 AUX Mode
- Connect one end of the provided input cable (3.5mm AUX cable) to the "AUX" port on the speaker.
- Connect the other end to the audio output jack of your external device (e.g., smartphone, MP3 player, laptop).
- Switch the speaker to AUX mode using the "Mode" button. Audio will now play through the speaker.
6.6 Microphone Usage and Voice Recording
- Insert the wireless microphone receiver into the "Mic Input" port. Ensure the wireless microphone is powered on.
- Adjust the "Mic Vol" knob to control the microphone's volume.
- Use the "Echo" knob to add or remove echo effect to your voice.
- To initiate voice recording (if supported by the current mode and media), refer to the remote control or specific button on the speaker for recording functionality. Ensure a USB drive or Micro SD card is inserted for saving recordings.
6.7 TWS (True Wireless Stereo) Function
The TWS function allows you to connect two Zeb TRX211 speakers wirelessly for a stereo audio experience. (Requires two Zeb TRX211 units).
- Ensure both speakers are powered on and in Bluetooth mode, but not yet paired with any device.
- On one of the speakers, press and hold the TWS button (refer to remote or speaker for specific button, usually the Play/Pause button in some models). The speaker will search for another TWS-compatible speaker.
- Once connected, you will hear an indication sound. The LED display on one speaker will show "BT" and the other will show "TWS".
- Now, connect your mobile device to the primary speaker via Bluetooth. Audio will play in stereo through both speakers.

Figure 4: TWS Function in Use
The TWS function allows two Zeb TRX211 speakers to connect wirelessly, creating a true stereo sound experience for a wider and more immersive audio output.
6.8 LED Lights
The speaker features dynamic LED lights. These lights typically activate automatically when the speaker is powered on. There may be a dedicated button on the remote or speaker to cycle through light modes or turn them off/on.
6.9 Remote Control
The included remote control provides convenient access to various functions:
- Power On/Off
- Mode Selection
- Volume Up/Down
- Track Skip (Next/Previous)
- Play/Pause
- Mute
- EQ Presets (if available)
- Number buttons for direct track selection (in USB/SD mode) or FM station selection.
7. Maintenance
7.1 Cleaning
Wipe the speaker's exterior with a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents as they may damage the finish. Avoid spraying liquids directly onto the speaker.
7.2 Storage
When not in use for extended periods, store the speaker in a cool, dry place away from direct sunlight and extreme temperatures. Ensure the speaker is fully charged before storing to maintain battery health.
7.3 Battery Care
The speaker has a built-in rechargeable battery. To maximize battery life:
- Avoid fully discharging the battery frequently.
- Charge the speaker regularly, even if not in frequent use.
- Do not leave the speaker connected to power for excessively long periods after it is fully charged.
8. Troubleshooting
If you encounter any issues with your speaker, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Battery is low or depleted. Power cable not connected properly. | Charge the speaker fully. Ensure the power cable is securely connected. |
| No sound from speaker. | Volume is too low or muted. Incorrect input mode selected. Audio source not playing. | Increase volume on speaker and connected device. Check if speaker is muted. Select correct input mode. Ensure audio is playing from the source. |
| Bluetooth not connecting. | Speaker not in pairing mode. Device Bluetooth is off. Speaker already connected to another device. | Ensure speaker is in Bluetooth pairing mode. Turn Bluetooth on your device. Disconnect from other devices. Try forgetting and re-pairing the device. |
| Microphone not working. | Microphone not powered on. Mic volume too low. Receiver not properly connected. | Ensure wireless mic is powered on and has fresh batteries. Increase "Mic Vol" knob. Ensure receiver is fully inserted into "Mic Input". |
| Poor FM reception. | Weak signal. Speaker position. | Adjust the speaker's position. Extend any external antenna if available. Perform another auto-scan. |
9. Specifications
Detailed technical specifications for the Zebronics Zeb TRX211 Moving Monster Trolley Speaker:
| Feature | Description |
|---|---|
| Model Name | ZEB-TRX211 Moving Monster |
| Speaker Type | Bookshelf (Trolley Speaker) |
| Connectivity Technology | Bluetooth, Auxiliary, USB, Micro SD, FM, Wireless |
| Wireless Communication Technology | Bluetooth |
| Audio Output Mode | Stereo (with TWS function) |
| Power Source | Battery Powered (Built-in rechargeable battery) |
| Audio Wattage | 48 Watts |
| Subwoofer Diameter | 12 Inches (30.48 cm full range speaker) |
| Tweeter Diameter | 1 Inches |
| Noise Level | 85 dB |
| Control Method | Remote Control, On-board controls |
| Included Components | DJ Speaker, Remote, Wireless Mic, User manual, Charging cable, Input cable |
| Product Dimensions (LxWxH) | 32.2 x 40.6 x 55.8 cm |
| Item Weight | 5.65 kg |
| Color | Black |
| Special Features | Retractable stand, Wheels, LED Display, LED Lights, Wireless Mic, Voice Recording, TWS Function |
10. Warranty and Support
10.1 Warranty Information
This Zebronics Zeb TRX211 Moving Monster Trolley Speaker comes with a 6-month warranty from the date of purchase. This warranty covers manufacturing defects and issues arising from normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper maintenance.
Please retain your purchase receipt as proof of purchase for warranty claims.
10.2 Customer Support
For any technical assistance, warranty claims, or product-related inquiries, please contact Zebronics customer support. You can find contact information on the official Zebronics website or through your retailer.
Manufacturer: Zebronics India Private Limited
For more information, visit the official ZEBRONICS Store on Amazon.





