1. Introduction
The FEELWORLD WT1S is a real-time wireless video transmission system designed for professional filmmaking, live streaming, and video monitoring. It features 5GHz transmission technology, supports up to 4K30p Ultra HD video, and integrates full duplex intercom functionality. This manual provides detailed instructions for setting up, operating, and maintaining your WT1S system.

Key Features:
- 4K30Hz Ultra HD Video Output
- HDMI & SDI Multiple Video Interfaces
- 0.08s Low Latency
- 1000FT Transmission Range
- Full Duplex Two-Way Intercom
- 5GHz Transmission Technology
- Smart Scan Auto Channel Selection
- Easy Pairing Quick One-Step Connection
- OLED Viewable Design for instant info
- Smart APP Monitoring (iOS and Android)

2. Package Contents
The WT1S system comes in a convenient package. Please check that all items are present:
- WT1S Transmitter Unit (TX)
- WT1S Receiver Unit (RX)
- Antennas
- Power Adapter (DC 6-16V)
- USB-C Cable
- User Manual (this document)
- (Optional) Type-C to Ethernet Adapter
3. Setup Guide
3.1. Component Identification

Transmitter (TX):
- HDMI OUT: HDMI output port.
- HDMI IN: HDMI input port.
- SDI IN: SDI input port.
- Antenna Ports: For connecting external antennas.
- OLED Display: Shows status and settings.
- Control Buttons: For navigation and settings adjustment.
- Power Input: DC 6-16V, USB-C 5V/1.5A, NP-F battery slot.
Receiver (RX):
- HDMI OUT 1: First HDMI output port.
- HDMI OUT 2: Second HDMI output port.
- SDI OUT: SDI output port.
- Antenna Ports: For connecting external antennas.
- OLED Display: Shows status and settings.
- Control Buttons: For navigation and settings adjustment.
- Power Input: DC 6-16V, USB-C 5V/1.5A, NP-F battery slot.
3.2. Powering the Device
The WT1S units can be powered using multiple methods:
- DC Adapter: Connect the provided DC power adapter to the DC 6-16V input port.
- USB-C: Use a USB-C cable to connect to a 5V/1.5A power source.
- NP-F Battery: Insert a compatible NP-F battery into the battery slot on the back of the unit.

3.3. Connecting Video Sources and Displays
Connect your camera or video source to the Transmitter (TX) and your monitor or recording device to the Receiver (RX).
- Attach the antennas to both the TX and RX units.
- Connect your camera's HDMI or SDI output to the corresponding HDMI IN or SDI IN port on the TX unit.
- Connect your monitor's HDMI or SDI input to the corresponding HDMI OUT (1 or 2) or SDI OUT port on the RX unit.
- Power on both the TX and RX units.

3.4. Mounting
Both the transmitter and receiver units feature a 1/4" screw thread, allowing them to be mounted on camera arms, cold shoes, or other compatible accessories.

4. Operating Instructions
4.1. Basic Operation
Once powered on and connected, the WT1S system will automatically attempt to establish a wireless link. The OLED display on both units will show the connection status.

The OLED display provides real-time information such as:
- Battery level
- Current group
- Transmission resolution
- Frame rate
- Current channel
- Link status (Link OK)
- Temperature
4.2. Channel Selection and Pairing
The WT1S supports preset grouping and pairing for easy setup. For automatic linking, ensure the grouping name and channel of the TX and RX units are consistent.

Smart Channel Scan: The receiver unit features a smart channel scan function. This allows you to identify occupied channels and select available ones for optimal transmission.

4.3. Multi-Receiver Setup
One WT1S transmitter can connect to up to four receivers simultaneously, providing flexibility for multiple monitoring points.

The transmitter unit can also be flexibly switched to function as a receiver. If you have two WT1S sets, you can configure one as a transmitter and three as receivers.

4.4. Full Duplex Intercom
The WT1S system includes a full duplex intercom function, enabling real-time communication between the director and the photographer or other crew members. Connect a compatible headset to the intercom port on both units to utilize this feature.

4.5. Smart APP Monitoring and Recording
Download the "Feelworld Wireless 2" app for iOS or Android to enhance your workflow with powerful monitoring tools. The app offers a wide range of functions, including waveform, vector, histogram, false colors, LUT, nine grid, pixel to pixel, image flip, scan mode, focus assist, exposure tips, monochrome deformation mode, center mark, safety frame, mask mark, audio column, image freeze, and image overlay.

4.6. Live Streaming
The WT1S system supports direct live streaming to platforms like OBS and VLC on your PC without requiring an additional video capture device. This is achieved using a Type-C to Ethernet adapter accessory connected to the receiver (RX).

There are two main settings for streaming:
- Static IP Streaming: Direct connection from RX to PC via Type-C to Ethernet adapter.
- Route IP Streaming: RX connects to a router via Type-C to Ethernet adapter, then to PC.
5. Maintenance
5.1. Cleaning
- Use a soft, dry cloth to clean the exterior of the units.
- Avoid using liquid cleaners or solvents, as they may damage the finish or internal components.
- Keep the OLED display clean and free from dust for optimal visibility.
5.2. Efficient Cooling System
The WT1S features an intelligent fan cooling system to prevent overheating and ensure stable signal transmission. The fan speed adjusts automatically based on temperature.
- Automatic Mode: The fan is on by default and adjusts speed automatically.
- Manual Off: For audio-critical scenarios where no fan noise is permissible, you can manually turn off the fan via the unit's settings. Be aware that turning off the fan may lead to increased operating temperatures.

5.3. Storage
- Store the units in a cool, dry place away from direct sunlight and extreme temperatures.
- When not in use for extended periods, remove NP-F batteries.
- Use the original packaging or a protective case for transport and storage.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No video signal on receiver. |
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| Intercom not working. |
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| Poor video quality or dropped frames. |
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| Live streaming not working. |
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7. Specifications
| Feature | Detail |
|---|---|
| Model Number | WT1S |
| Photography Accessories Type | Wireless Video Transmission |
| HDMI Format | 480P60, 576P60, 720P60/59.94/50, 1080P60/59.94/50/30/29.97/25/24/23.98, 1080I60/59.94/50 (HDMI Type A) |
| SDI Format | 480P60, 576P60, 720P60/59.94/50, 1080P60/59.94/50/30/29.97/25/24/23.98, 1080I60/59.94/50 (1*BNC) |
| Frequency | 5.1 to 5.9GHz |
| Modulation Mode | OFDM |
| Transmission Power | Maximum 17dBm |
| Operating Temperature | 0℃ to 40℃ |
| Power Supply Way | F970 battery, Type-C, DC adapter |
| Transmission Range | 1000FT (300m) Line of Sight |
| Latency | 0.08s |
| Intercom | Full Duplex |
| App Monitoring | "Feelworld Wireless 2" (iOS & Android) |
| Cooling System | Fan cooling (automatic, manual off option) |
| Mounting | 1/4" screw thread |
| Chemicals | None (High-concerned chemical free) |

8. User Tips
- For optimal performance, always ensure a clear line of sight between the transmitter and receiver.
- Utilize the Smart Channel Scan feature on the receiver to find the least congested 5GHz channel, especially in environments with high wireless traffic.
- When using the intercom, ensure headsets are properly connected and volume levels are adjusted for clear communication.
- If experiencing signal drops or poor quality, try repositioning the units or switching to a different channel.
- For live streaming, double-check your network settings (Static IP vs. Route IP) and OBS/VLC configurations.
9. Frequently Asked Questions (FAQ)
- Q: Does it cross convert HDMI to SDI signal?
- A: The product description indicates SDI input and HDMI input/output on the transmitter, and SDI output and dual HDMI output on the receiver. This suggests it can handle both signal types, but explicit cross-conversion capability (e.g., HDMI IN to SDI OUT on TX, or SDI IN to HDMI OUT on RX) is not explicitly stated as a feature. Please refer to the detailed specifications or contact support for confirmation on specific cross-conversion scenarios.
- Q: What are the compatible resolutions and codecs (e.g., 23.98p or 23.98psf)?
- A: The system supports a wide range of resolutions and frame rates for both HDMI and SDI. For HDMI, it supports 480P60, 576P60, 720P60/59.94/50, 1080P60/59.94/50/30/29.97/25/24/23.98, and 1080I60/59.94/50. For SDI, it supports 480P60, 576P60, 720P60/59.94/50, 1080P60/59.94/50/30/29.97/25/24/23.98, and 1080I60/59.94/50. This includes 23.98p for both HDMI and SDI.
10. Warranty and Support
For warranty information and technical support, please refer to the official FEELWORLD website or contact your authorized dealer. Keep your purchase receipt as proof of purchase for warranty claims.





