1. Introduction
Thank you for choosing the TOPTRO TR21 WiFi Bluetooth Projector. This portable home video projector offers a high-quality viewing experience with support for 1080P resolution, 9500 lumens brightness, and a 200-inch display. It features wireless connectivity via WiFi for screen mirroring and Bluetooth 5.0 for enhanced audio output. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device.
2. What's in the Box
- TR21 Projector
- Lens Cover
- Remote Controller
- Power Cable
- 3 in 1 AV Cable
- HDMI Cable
- Cleaning Cloth
- User Manual
3. Product Overview and Features
The TOPTRO TR21 projector is designed for versatile home and outdoor entertainment, offering a range of features for an immersive viewing experience.
3.1 Main Unit

The main projector unit, showcasing its compact design and connectivity icons for Bluetooth and WiFi, along with a projected image and a mirroring smartphone.
3.2 Wireless Connectivity

The projector supports wireless screen mirroring from mobile devices (iOS and Android) via WiFi, eliminating the need for additional cables or adapters.
3.3 Multiple Device Connection

Equipped with HDMI, USB, VGA, AV, and SD card ports, the TR21 can connect to a wide range of devices including PCs, TV Sticks, PS4, X-Box, speakers, and DVD players.
3.4 Focus and Keystone Correction

Easily adjust image clarity using the focus wheel and correct distorted images with the manual ±15° keystone correction feature.
3.5 Zoom Function and Installation Types

The projector features a zoom function, allowing adjustment of the screen size between 75% and 100%. It supports front, rear, and ceiling installation types.
3.6 Bluetooth 5.0 Audio Output

Built with a Bluetooth 5.0 chip, the projector can connect to various Bluetooth speakers and headphones for an enhanced audio experience. Note: This function is for audio output only and cannot connect to phones/pads.
4. Setup Guide
4.1 Initial Placement
Place the projector on a stable, flat surface or mount it according to your preferred installation type (front, rear, or ceiling). Ensure there is adequate ventilation around the projector.
4.2 Power Connection
Connect the provided power cable to the projector's power input and then to a power outlet.
4.3 Adjusting Image
After powering on, adjust the focus ring on the projector lens until the image appears clear. Use the keystone correction dial to correct any trapezoidal distortion, ensuring a rectangular image.
4.4 Connecting Devices
Choose your desired input source:
- HDMI: Connect an HDMI cable from your source device (e.g., laptop, TV stick, PS4) to the projector's HDMI port.
- USB: Insert a USB drive into the USB port to play media files directly.
- VGA: Connect a VGA cable from your computer to the projector's VGA port.
- AV: Use the 3-in-1 AV cable to connect older devices.
- SD Card: Insert an SD card into the designated slot.
4.5 Wireless Connection (WiFi Screen Mirroring)
- Select the 'Screen Mirroring' or 'WiFi' input source on the projector.
- Follow the on-screen instructions to connect your mobile device (smartphone or tablet) to the projector's WiFi network.
- Enable screen mirroring/casting on your mobile device and select the projector from the list of available devices.
4.6 Bluetooth Audio Connection
- Ensure your Bluetooth speaker or headphones are in pairing mode.
- On the projector's menu, navigate to the Bluetooth settings.
- Select your Bluetooth audio device from the list to pair.
5. Operating Instructions
5.1 Power On/Off
Press the power button on the projector or the remote control to turn the unit on or off.
5.2 Source Selection
Use the 'Source' button on the remote or projector to cycle through input options (HDMI, USB, VGA, AV, Screen Mirroring).
5.3 Menu Navigation
Use the arrow keys and 'OK' button on the remote to navigate the projector's on-screen menu for settings adjustments.
5.4 Zoom Function
Access the zoom function through the projector's menu to adjust the projected image size between 75% and 100% without moving the projector.
5.5 Audio Output
While the projector has a built-in speaker, for a richer audio experience, it is recommended to connect external speakers via the Bluetooth function or the 3.5mm audio output port.
6. Maintenance
6.1 Lamp Life
The TOPTRO TR21 utilizes advanced LED technology, providing an extended lamp life of up to 120,000 hours. This significantly reduces the need for lamp replacement.
6.2 Cooling System
The projector features an updated cooling system and noise suppression technology, ensuring efficient heat dissipation and reduced fan noise. To maintain optimal cooling, ensure the ventilation vents are not blocked.
6.3 Cleaning
- Lens: Use the provided cleaning cloth or a soft, lint-free cloth specifically designed for optical lenses. Do not use abrasive cleaners.
- Exterior: Wipe the projector's exterior with a soft, dry cloth. For stubborn marks, a slightly damp cloth can be used, followed by a dry wipe.
- Vents: Periodically check and gently clean the air vents to prevent dust buildup, which can impede airflow and cooling efficiency.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No image / Blurry image | Incorrect focus, keystone, or input source. | Adjust the focus ring and keystone correction. Ensure the correct input source is selected. Check cable connections. |
| No sound or low volume | Volume too low, incorrect audio output, or external speaker issue. | Increase projector volume. Check if external speakers are connected and powered on. Ensure Bluetooth audio is correctly paired. |
| Wireless screen mirroring not working | Incorrect WiFi setup, device compatibility, or network issues. | Ensure both devices are on the same network. Restart the projector and mobile device. Some streaming services may block mirroring due to copyright. Consider using an HDMI connection for consistent performance. |
| Image too dim | Ambient light, projection distance. | For optimal brightness, use the projector in a dark room. Adjust projection distance as needed. |
| Fan noise is loud | Normal operation, blocked vents. | Some fan noise is normal for cooling. Ensure vents are not blocked and the projector has adequate space for airflow. |
| Audio delay with Bluetooth speaker | Bluetooth latency. | Try connecting the Bluetooth speaker directly to the source device if possible. Some Bluetooth speakers may have inherent latency. |
8. Specifications
- Model Number: TR21
- Product Dimensions: 7.64 x 6.02 x 3.15 inches
- Item Weight: 2.2 pounds
- Display Resolution: 1280 x 720 (Native)
- Brightness: 9500 Lumens
- Contrast Ratio: 10000:1
- Connectivity Technology: VGA, Bluetooth, USB, HDMI
- Special Features: Built-In Speaker, Portable, Built-In Cooling System, WiFi, Bluetooth 5.0
- Recommended Uses: TV Stick, Outdoor, Home
- Visible Screen Diagonal: Up to 200 inches / 508 cm
9. Warranty and Support
TOPTRO offers a three-year warranty for the TR21 projector. Additionally, lifetime technical support is available. For any issues or inquiries, please contact TOPTRO customer support directly via the contact information provided in your product packaging or on the official TOPTRO website. Please have your model number (TR21) and purchase details ready when contacting support.





