CkeyiN 6-in-1 Multifunction Digital Bottle Warmer
CkeyiN 6-in-1 Multifunction Digital Bottle Warmer User Manual
Model: 6-in-1 Multifunction Digital Bottle Warmer
1. Introduction
Thank you for choosing the CkeyiN 6-in-1 Multifunction Digital Bottle Warmer. This device is designed to safely and efficiently warm milk, defrost, sterilize bottles, warm formula, and heat baby food. Please read this manual carefully before use to ensure proper operation and maintenance.

CkeyiN 6-in-1 Multifunction Digital Bottle Warmer with control panel and two bottles.
2. Safety Instructions
- Always use distilled or demineralized water to prevent mineral buildup and sensor oxidation.
- Do not immerse the main unit in water or other liquids.
- Keep out of reach of children.
- Ensure the power cord is not damaged and is kept away from hot surfaces.
- Unplug the device when not in use and before cleaning.
- Do not operate the appliance if it has been damaged in any way. Contact customer support for assistance.
- The device will automatically shut off if the water boils dry.
3. Product Components
The CkeyiN 6-in-1 Multifunction Digital Bottle Warmer typically includes the following components:
- Main Heating Unit with Digital Display and Control Panel
- Removable Bottle Basket/Tray
- Protective Lid
- Power Cord

The main unit of the CkeyiN bottle warmer, showing the digital display and the transparent lid.
4. Setup
- Unpack all components and remove any packaging materials.
- Wipe the main unit with a damp cloth. Wash the bottle basket and lid with warm soapy water, then rinse thoroughly.
- Place the bottle warmer on a stable, flat, heat-resistant surface.
- Ensure the power cord is securely plugged into a suitable electrical outlet.
5. Operating Instructions
The CkeyiN bottle warmer features an intuitive digital control panel. The device utilizes an intelligent AI algorithm for precise temperature control, with NTC temperature control and an external probe for accuracy, and 200W PTC for rapid heating.

The CkeyiN bottle warmer features intelligent AI algorithm for precise temperature control, utilizing NTC temperature control and an external probe for accurate heating, powered by 200W PTC for rapid warming. A note reminds users that displayed temperature may differ from actual bottle temperature during heating, stabilizing after 15-20 minutes.
General Operation Steps:
- Prepare the Bottle/Food: Place the bottle with milk or formula, or a container with baby food, into the bottle basket.
- Add Water: Pour approximately 100ml of distilled or demineralized water into the heating chamber. Ensure the water level is sufficient but does not cause the bottle to float.
- Power On: Press the ON/OFF button to turn on the device.
- Select Function: Press the Function button to cycle through the available modes (Warm Milk, Defrost, Sterilize, Warm Formula, Warm Food).
- Adjust Settings: Use the + and - buttons to adjust the desired temperature and time for the selected function. The device will automatically enter the working state if no operations are performed for 5 seconds (default temperature 45°C).
- Monitor and Test: Once the cycle is complete, carefully remove the bottle/food. Always shake the bottle and test the temperature of the milk/food on your wrist before feeding your baby.

Step-by-step guide on how to use the CkeyiN bottle warmer: 1. Place the bottle in the device. 2. Pour 100ml of water, ensuring the bottle does not float. 3. Select the function, adjust temperature and time (device enters working state automatically if no operations for 5 seconds, default 45°C). 4. Shake the bottle and test milk temperature on your hand.
Specific Functions and Settings:
- Warm Milk (Normal Warm Mode): Default temperature 45°C, adjustable range 37-60°C. This mode can keep milk warm for up to 48 hours.
- Defrost (Rapid Heating/Defrost Mode): Default temperature 45°C, adjustable range 45-60°C.
- Sterilize (Steam Cleaning Mode): Default temperature 100°C. The device maintains boiling for 5 minutes to sterilize bottles and accessories.
- Warm Formula: Use this mode to prepare formula to the ideal temperature.
- Warm Food: Default temperature 75°C, adjustable range 37-90°C. Suitable for heating various baby foods.

Detailed temperature settings for various functions: 48-hour warm mode (default 45°C, adjustable 37-60°C), rapid heating/defrost mode (default 45°C, adjustable 45-60°C), warm food mode (default 75°C, adjustable 37-90°C), and steam cleaning mode (default 100°C, maintains boiling for 5 minutes).

The CkeyiN bottle warmer is suitable for heating various food accessories, including warm milk, warm porridge, baby food, and steamed eggs.

Steam cleaning function of the CkeyiN bottle warmer, providing thorough sterilization with high-temperature steam to eliminate germs.

The CkeyiN bottle warmer features a double-screen open top design, compatible with most bottle types and capacities ranging from 30-240 ml, including glass, silicone, plastic bottles, and breast milk storage bags.
6. Maintenance and Cleaning
- Always unplug the device and allow it to cool completely before cleaning.
- Main Unit: Wipe the exterior with a soft, damp cloth. Do not use abrasive cleaners or immerse the unit in water.
- Heating Plate/Sensor: Regularly clean the heating plate and temperature sensor to prevent mineral buildup. Use a solution of white vinegar and water (1:1 ratio) to descale. Pour the solution into the heating chamber, let it sit for 30 minutes to an hour (or run a short heating cycle if heavily scaled), then rinse thoroughly with clean water.
- Bottle Basket and Lid: Wash with warm soapy water and rinse thoroughly. These parts are typically dishwasher safe (top rack only), but hand washing is recommended for longevity.
- Ensure all parts are completely dry before storing or next use.
7. Troubleshooting
- Device not turning on: Ensure the power cord is securely plugged into a working outlet.
- Heating is slow or inconsistent: Check if sufficient water has been added. Ensure the heating plate and sensor are clean and free of mineral buildup. Use distilled or demineralized water.
- Sterilization function stops prematurely: This can be caused by sensor oxidation or too much water. Clean the sensor as described in the maintenance section. Ensure the water level is appropriate for sterilization. The device has a dry boil protection feature.
- Displayed temperature differs from actual milk temperature: This is normal during the heating process. The displayed temperature refers to the water temperature. The milk temperature will stabilize after approximately 15-20 minutes. Always test milk temperature on your wrist before feeding.
- Error codes on display: If an error code appears, try unplugging the device for a few minutes and plugging it back in. If the error persists, contact customer support.

The CkeyiN bottle warmer features dry boil protection, automatically stopping operation if water levels are too low.
8. Specifications
| Manufacturer | CkeyiN |
| Model | 6-in-1 Multifunction Digital Bottle Warmer |
| ASIN | B0C4TVGGN8 |
| Dimensions (Package) | 28.6 x 24.2 x 13.8 cm |
| Weight (Package) | 930 grams |
| Power Source | Electric (No batteries required) |
| Functions | Warm Milk, Defrost, Sterilize, Warm Formula, Warm Food, 48H Keep Warm |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or contact the retailer where the product was acquired. Keep your proof of purchase for warranty claims.
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