Introduction
Thank you for choosing the MinimumRC Cassiopeia 4CH RC Transmitter. This manual provides essential information for the safe and efficient operation of your new remote control system. Please read this manual thoroughly before use to ensure proper setup and to maximize your enjoyment of this product.

Safety Precautions
- Always operate your RC model in open areas, away from people, vehicles, and obstacles.
- Ensure the transmitter batteries are fully charged before each use.
- Verify all control surfaces move correctly and in the proper direction before flight.
- Do not operate the transmitter in adverse weather conditions (e.g., strong winds, rain).
- Keep the transmitter and receiver away from moisture and extreme temperatures.
- This product is recommended for users aged 14 years and older.
⚠ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Setup
Battery Installation
The MinimumRC Cassiopeia transmitter does not include batteries. You will need to supply your own. Ensure you use appropriate batteries for RC transmitters and install them according to the polarity markings inside the battery compartment (not shown in provided images, typical for RC transmitters).
Binding the Transmitter and Receiver
To establish a connection between your transmitter and micro receiver, follow these steps:
- Power off the transmitter.
- Power on the receiver and wait approximately 10 seconds until its LED starts flashing rapidly.
- Hold down the 'LB' button on the transmitter, then power on the transmitter. Release the 'LB' button.
- The indicator light on the receiver should now go solid, indicating a successful bind.
- Power off and then power on the receiver again to confirm the binding is complete.

Operating Instructions
Channel Reverse
To reverse the direction of any channel:
- Simultaneously hold down both the 'LB' and 'RB' buttons on the transmitter.
- To reverse a specific channel, press its corresponding trim button.
Mode Switching
The transmitter supports different flight modes. To switch between modes:
- Power off the transmitter.
- Hold down the 'RB' button, then power on the transmitter. Release the 'RB' button.
The indicator light will show the current mode:
- Red: Normal mode
- Yellow: Delta-wing mode
- Orange: V-tail mode
Channel Trim
To adjust the neutral point of a channel:
- Toggle the desired channel's trim button several times.
- When the trim value is cleared, the LED will flash red and yellow several times as confirmation.
Throttle Safety Feature
Upon powering on the transmitter, if the throttle lever is not at its lowest (idle) position, the LED will flash red and yellow. This safety feature prevents accidental throttle engagement. Move the throttle lever to its lowest point to clear the warning and enable normal operation.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Receiver LED continues to flash rapidly after binding attempt. | Binding failed or interrupted. | Ensure the transmitter and receiver are close, and repeat the binding procedure carefully. Check for interference. |
| Transmitter LED flashes red and yellow upon power-on. | Throttle lever is not at its lowest position. | Move the throttle lever to the lowest position to engage the throttle safety. |
| Transmitter LED flashes yellow during operation. | Low battery voltage (below 3.8V). | Replace the transmitter batteries immediately. |
| Controls are reversed. | Channel direction is incorrect. | Use the Channel Reverse function as described in the Operating Instructions. |
| Erratic control or short range. | Interference, low battery, or damaged antenna. | Check battery levels, ensure no strong interference sources nearby, inspect antennas for damage. |
Specifications
- Brand: MinimumRC
- Model: Cassiopeia 4CH RC Transmitter
- Channels: 4
- Material: Plastic (ABS)
- Dimensions: 18.5 x 16 x 6 cm
- Control Range: Up to 200 meters
- Power Source: User-supplied batteries (not included)
- Battery Type: Not specified, typically requires AA or AAA batteries (check product packaging for details).
- Compatibility: Designed for use with MinimumRC micro receivers, compatible with DSM2, Flysky, Frsky, S-FHSS protocols.
- Recommended Age: 14+ years

User Tips
- Receiver Compatibility: The Cassiopeia transmitter is designed to work with various micro receivers supporting DSM2, Flysky, Frsky, and S-FHSS protocols. Ensure your receiver is compatible for proper operation.
- Throttle Mode: The transmitter is available in two throttle configurations: Mode 1 (Right Hand Throttle) and Mode 2 (Left Hand Throttle). Choose the mode that best suits your flying style.
- Battery Care: Always remove batteries from the transmitter if it will not be used for an extended period to prevent leakage and damage.


Maintenance
- Keep the transmitter clean by wiping it with a soft, dry cloth. Avoid using harsh chemicals or solvents.
- Store the transmitter in a cool, dry place, away from direct sunlight and extreme temperatures.
- Regularly check the battery compartment for corrosion and ensure battery contacts are clean.
- Inspect the antenna for any signs of damage before each use.
Support
For further assistance or inquiries regarding your MinimumRC Cassiopeia 4CH RC Transmitter, please contact the seller, Free Flight RC plane Store, through the platform where you made your purchase. Please have your product model number and purchase details ready when contacting support.





