Introduction
The TELESIN 6-inch Dome Port Lens T09 is designed to enhance underwater and split-level photography with your GoPro Hero 13, 12, 11, 10, or 9 Black camera. This integrated waterproof housing and dome design allows for simultaneous capture of images both above and below the water surface, providing a wide-angle perspective. It is waterproof up to 30 meters (98 feet) and features an easy-press trigger for convenient camera operation.
Package Contents
- TELESIN 6-inch Dome Port Lens T09
- Floating Hand Grip
- Trigger Shutter Button
- Wrist Strap
- Cleaning Cloth
- Anti-fog Inserts
Setup
Follow these steps to properly set up your TELESIN Dome Port with your GoPro camera:
- Prepare your GoPro: Ensure your GoPro Hero 13/12/11/10/9 Black camera is fully charged and its internal seals are clean and free from debris.
- Open the Dome Port Housing: Carefully open the back latch of the dome port's integrated waterproof housing.
- Insert GoPro: Slide your GoPro camera into the housing, ensuring it fits snugly and the lens aligns with the dome. Make sure the camera's buttons are accessible through the housing's controls.
- Secure the Housing: Close the back latch firmly. Verify that the waterproof seal is properly seated and there are no gaps. The housing is designed with a 35mm thick body and 5mm thick sealed buckle for secure closure.
- Attach Floating Grip: Connect the floating hand grip to the bottom mount of the dome port. Tighten the screw to secure it.
- Attach Trigger: Install the trigger shutter button onto the designated slot on the handle for easy one-handed operation.
- Perform a Water Test (Recommended): Before first use with your camera, submerge the empty dome port in water to check for any leaks. If no leaks are observed, proceed with camera installation.

Operating Instructions
The TELESIN Dome Port is designed for versatile underwater and split-level shooting.
Underwater Photography
- Ensure all seals are secure before submerging.
- The dome port is waterproof up to 30 meters (98 feet).
- Use the easy-press trigger to control your GoPro's recording or photo capture functions underwater.

Split-Level (50/50) Shots
To capture unique images that show both above and below the water surface:
- Gently lower the dome port into the water until the waterline is positioned across the middle of the dome.
- The wide-angle lens of the dome port helps capture an immersive view.
- For best results, keep the dome surface clean and free of water droplets. Rain-X wipes or similar water-repellent treatments can help.

Buoyancy and Handling
- The floating hand grip provides positive buoyancy, preventing the dome port from sinking if accidentally released.
- The grip can also act as a counterweight or buoyancy bar depending on how it's used, offering flexibility in handling.

Maintenance
Proper maintenance ensures the longevity and performance of your dome port.
- Cleaning: After each use, especially in saltwater, rinse the dome port thoroughly with fresh water. Use the provided cleaning cloth to gently wipe the dome surface. Avoid abrasive materials that could scratch the acrylic.
- Seal Inspection: Regularly inspect the rubber seals for any signs of wear, cracks, or trapped debris. A clean and intact seal is crucial for waterproofing.
- Storage: Store the dome port in a cool, dry place away from direct sunlight. Use the foam packaging it came with for travel to protect the dome from scratches and impacts.
- Dome Protection: While the dome is made of durable PC+Acrylic, it can still scratch. Handle with care and avoid placing it face down on rough surfaces.
Troubleshooting
- Water Leakage: If water enters the housing, immediately remove your GoPro. Check all seals for proper seating, cleanliness, and damage. Ensure the back latch is fully closed and secured. Always perform a water test without the camera if you suspect a leak.
- Fogging: If the inside of the dome fogs up, use the anti-fog inserts provided. Ensure the camera and dome interior are dry before sealing. Fogging can occur due to temperature differences.
- Scratches on Dome: Minor scratches can sometimes be buffed out with specialized acrylic polish, but deep scratches may affect image quality. Prevent scratches by storing the dome properly and avoiding rough contact.
- GoPro Overheating: Extended use of the GoPro inside any sealed housing, especially in warm conditions, can lead to overheating. If your GoPro becomes excessively hot, remove it from the housing and allow it to cool down. Monitor camera temperature during prolonged use.
Specifications
| Feature | Specification |
|---|---|
| Brand | TELESIN |
| Model Name | TELESIN 6 inches Dome Port Lens |
| Manufacturer Part Number | T09 Dome Port |
| Compatible Camera Models | GoPro HERO13 Black, GoPro HERO12 Black, GoPro HERO11 Black, GoPro HERO10 Black, GoPro HERO9 Black |
| Water Resistance Level | Waterproof (up to 30m) |
| Material | Polycarbonate (PC) + Acrylic |
| Screen Size (Dome Diameter) | 6 inches |
| Item Dimensions (D x W x H) | 3.94"D x 5.91"W x 3.94"H |
| Item Weight | 250 g |
Warranty
TELESIN Official guarantees this dome port for 2 years from the date of purchase. This warranty covers manufacturing defects under normal use. Please retain your proof of purchase for warranty claims.
Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact TELESIN customer support through their official website or the retailer where the product was purchased. You can also visit the TELESIN Store on Amazon for more information and contact options.



