1. Introduction
This manual provides essential information for the safe operation and maintenance of your DEERC DE28 RC Helicopter. Please read this manual thoroughly before operating the helicopter to ensure proper function and to prevent damage or injury. The DEERC DE28 is designed for indoor use and features a durable metal airframe, altitude hold, one-key take-off/landing, and multiple speed modes for various skill levels.

Image: The DEERC DE28 RC Helicopter, its remote control, and two interchangeable body shells (red and blue/white).
2. Safety Guidelines
WARNING: Failure to follow these instructions may result in injury or damage to the product.
- Indoor Use Only: This helicopter is designed for indoor flight. Do not operate outdoors, as wind can cause loss of control.
- Age Recommendation: Recommended for users aged 14 years and up. Adult supervision is advised for younger users.
- Clear Flight Path: Ensure the flight area is clear of obstacles, people, and pets. Maintain a safe distance from walls, furniture, and other objects.
- Battery Safety:
- Use only the provided charger and batteries.
- Do not overcharge or short-circuit batteries.
- Do not expose batteries to extreme temperatures or direct sunlight.
- If batteries swell or leak, discontinue use immediately and dispose of them properly.
- Rotor Blades: Keep fingers, hair, and loose clothing away from rotating blades. Do not touch the helicopter while the blades are spinning.
- Supervision: Always supervise children when they are operating the helicopter.
- Impact Avoidance: While durable, repeated hard impacts can damage the helicopter. Avoid crashing.
3. Package Contents and Component Identification
Verify that all items listed below are included in your package. If any items are missing or damaged, please contact DEERC customer support.

Image: Overview of the DEERC DE28 RC Helicopter package contents.
Package Contents:
- DEERC DE28 RC Helicopter (1)
- 2.4GHz Remote Control (1)
- Rechargeable Helicopter Batteries (2)
- USB Charging Cable (1)
- Spare Main Rotor Blades (A & B) (2 sets)
- Spare Tail Rotor Blade (1)
- Screwdriver (1)
- Extra Helicopter Shell (1)
- User Manual (1)
Component Identification:

Image: The DEERC DE28 helicopter showcasing its full aluminum alloy body and key features like fast acceleration, altitude hold, one-key takeoff/land, LED light, 2.4GHz, 3 speed modes, gyroscope system, and 2 shells.
- Main Rotor Blades: Provide lift and thrust.
- Tail Rotor Blade: Controls yaw (rotation around vertical axis).
- LED Light: Front-mounted light for visibility and aesthetics.
- Landing Skids: Provide stable landing and protect the helicopter.
- Battery Compartment: Located on the underside of the helicopter.
- Power Switch: On/Off switch for the helicopter.
- Charging Port: For connecting the USB charging cable.
- Remote Control:
- Left Stick: Throttle (up/down) and Yaw (left/right).
- Right Stick: Forward/Backward, Left/Right Sideways flight.
- One-Key Take-off/Landing Button.
- Speed Mode Button.
- Power Indicator LED.
- Power Switch.

Image: The DEERC DE28 helicopter with its two interchangeable shells, blue/white and red.
4. Setup Guide
4.1 Charging the Helicopter Battery
- Connect the USB charging cable to the helicopter's charging port.
- Plug the other end of the USB cable into a USB power adapter (e.g., computer USB port, phone charger, power bank).
- The charging indicator light on the USB cable will illuminate during charging and turn off when fully charged.
- A full charge typically takes approximately 60-90 minutes. Do not leave charging unattended.
- Disconnect the cable once charging is complete.

Image: The helicopter's battery compartment, illustrating the battery and its approximate 12-minute flight time per charge.
4.2 Installing Remote Control Batteries
- Open the battery compartment on the back of the remote control.
- Insert 3 x AAA batteries (not included) into the compartment, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
4.3 Pairing the Helicopter and Remote Control
- Ensure both the helicopter and remote control are fully charged/have fresh batteries.
- Place the helicopter on a flat, level surface.
- Turn on the helicopter's power switch. The helicopter's LED lights will flash.
- Turn on the remote control's power switch. The remote control's indicator light will flash.
- Push the left throttle stick (left joystick) all the way up, then pull it all the way down.
- Both the helicopter's and remote control's indicator lights will become solid, indicating successful pairing.
- If pairing fails, turn off both devices and repeat the steps.

Image: The 2.4GHz remote control in use, demonstrating its connection to the helicopter.
5. Operation
5.1 Basic Flight Controls
- One-Key Take-off: After pairing, press the One-Key Take-off/Landing button. The helicopter will automatically ascend and hover at a stable altitude.
- Throttle (Left Stick Up/Down): Controls the helicopter's altitude. Push up to ascend, pull down to descend.
- Yaw (Left Stick Left/Right): Controls the helicopter's rotation. Push left to rotate counter-clockwise, right to rotate clockwise.
- Forward/Backward (Right Stick Up/Down): Controls the helicopter's forward and backward movement.
- Left/Right Sideways (Right Stick Left/Right): Controls the helicopter's sideways movement (strafe).
- Altitude Hold: The helicopter will automatically maintain its current altitude when the throttle stick is released, allowing for easier control.
- One-Key Landing: During flight, press the One-Key Take-off/Landing button again. The helicopter will slowly descend and land automatically.

Image: The helicopter demonstrating its One-Key Take-off and Altitude Hold features.
5.2 Speed Modes
The DEERC DE28 features 3 speed modes to accommodate different skill levels. Press the Speed Mode button on the remote control to cycle through the modes:
- Low Speed: Ideal for beginners and indoor flight in confined spaces. Provides stable and gentle control.
- Medium Speed: A balanced mode for intermediate users, offering more responsiveness.
- High Speed: For experienced pilots seeking maximum agility and faster flight.

Image: The helicopter demonstrating its three speed levels, suitable for both adults and children.
5.3 LED Light Control
The helicopter is equipped with bright LED lights for enhanced visibility, especially in low-light conditions. The LED lights typically turn on automatically when the helicopter is powered on. Refer to the remote control diagram for any dedicated light control buttons, if available.

Image: The helicopter's front LED light illuminated.
6. Maintenance
6.1 Cleaning
- Always turn off the helicopter and remote control before cleaning.
- Wipe the helicopter with a soft, dry cloth. Do not use water or chemical cleaners, as they may damage the electronics.
- Remove any dust or debris from the rotor blades and motors.
6.2 Blade Replacement
If a rotor blade becomes damaged, it can be replaced using the spare blades provided and the included screwdriver.
- Identify the damaged blade (A or B).
- Carefully unscrew the small screw holding the blade in place.
- Remove the damaged blade.
- Align the new blade (ensure it's the correct A or B type) and secure it with the screw. Do not overtighten.

Image: The durable and flexible design of the helicopter blades.
6.3 Storage
- Store the helicopter and remote control in a cool, dry place away from direct sunlight and moisture.
- If storing for an extended period, remove batteries from the remote control to prevent leakage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Helicopter does not respond to remote control. | Not paired; Low battery (helicopter or remote); Remote control off. | Ensure both are on and paired. Charge helicopter battery. Replace remote control batteries. |
| Helicopter cannot take off or flies weakly. | Low helicopter battery; Damaged blades; Obstruction. | Charge helicopter battery fully. Replace damaged blades. Clear any obstructions. |
| Helicopter drifts or spins uncontrollably. | Not calibrated on a flat surface; Damaged tail rotor; Strong airflow. | Ensure helicopter is placed on a flat surface for pairing. Check and replace tail rotor if damaged. Fly in a calm environment. |
| LED lights not working. | Helicopter off; Malfunction. | Ensure helicopter is powered on. If still not working, contact support. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | CADE4-DE28 |
| Dimensions (L x W x H) | 19.99 x 4.5 x 12.5 cm (7.87 x 1.77 x 4.92 inches) |
| Weight | 290 g |
| Control Frequency | 2.4 GHz |
| Channels | 3.5 CH |
| Flight Time | Approx. 12 minutes per battery |
| Charging Time | Approx. 60-90 minutes |
| Recommended Age | 14 years and up |
| Features | Altitude Hold, One-Key Take-off/Landing, 3 Speed Modes, LED Light, Gyroscope System |

Image: Dimensions of the DEERC DE28 RC Helicopter.
9. Warranty and Support
DEERC products are manufactured to high quality standards. For information regarding warranty coverage, returns, or technical support, please refer to the official DEERC website or contact their customer service directly.
DEERC Official Website: www.deerc.com
Please have your model number (DE28) and purchase details ready when contacting support.





