Introduction
Thank you for choosing the SANSI 40W Dimmable E27 LED Grow Light Bulb. This manual provides essential information for the safe and effective use of your grow light. Please read these instructions carefully before installation and operation, and retain them for future reference.
Safety Information
- Ensure the power supply is disconnected before installation or maintenance.
- This product is designed for indoor use only (IP20 rating). Do not expose to water or high humidity.
- Do not use in enclosed fixtures or with lampshades, as this can impede heat dissipation and shorten the product's lifespan.
- Avoid direct eye exposure to the light when operating.
- Keep out of reach of children.
Package Contents
- 1 x SANSI 40W Dimmable E27 LED Grow Light Bulb
- 1 x Remote Control
Setup
- Installation: Carefully screw the SANSI grow light bulb into any standard E27 socket. Ensure the socket is rated for at least 40W.
- Positioning: Mount the grow light approximately 45.7 to 61 cm (18 to 24 inches) above your plants. This distance provides optimal coverage and light intensity for an area up to 9 square meters.
- Environment: Ensure the light is in an open fixture to allow for proper ventilation and heat dissipation.

Image: The SANSI 40W Dimmable E27 LED Grow Light Bulb installed in a pendant fixture, illuminating indoor plants. This demonstrates a typical setup for the grow light.

Image: A diagram illustrating the Photosynthetic Photon Flux Density (PPFD) of the SANSI grow light at various heights (1ft, 2ft, 3ft, 4ft) above plants, indicating light intensity and coverage area.
Operating Instructions
The SANSI 40W Dimmable E27 LED Grow Light features an integrated timer and brightness adjustment, controlled via the included remote.
Remote Control Functions:
- Light ON/OFF: Power the light on or off.
- Timer Settings: Select 4, 8, or 12 hours. The light will operate for the selected duration and then turn off for the remainder of a 24-hour cycle (e.g., 4 hours ON, 20 hours OFF). Press 'Disable Timer' to turn off the timer function.
- Brightness Adjustment: Choose from 25%, 50%, 75%, or 100% brightness levels to suit different plant growth stages and needs.

Image: The remote control for the SANSI grow light, displaying buttons for Light ON/OFF, 4/8/12 hour timers, disable timer, and 25%/50%/75%/100% brightness adjustments.
Optimal Light Cycle:
Plants require periods of darkness for healthy growth. Do not operate the grow light 24 hours a day. Utilize the timer function to provide an appropriate light/dark cycle for your specific plant species.
Full Spectrum Benefits:
This grow light provides a uniform full spectrum (400nm to 780nm) that mimics natural sunlight, supporting all stages of plant growth from germination to flowering and fruiting.
- Blue Light (400-520 nm): Promotes chlorophyll and carotenoid absorption, aiding root and stem growth.
- Red Light (620-750 nm): Essential for blooming and fruiting.

Image: A graph illustrating the full spectrum output of the SANSI grow light, showing peaks in blue and red wavelengths, along with visual representations of plant stages (germinating, growing, blooming, fruiting) benefiting from this spectrum.
Maintenance
- Cleaning: Ensure the light is off and cool before cleaning. Gently wipe the bulb with a soft, dry cloth to remove dust. Do not use liquid cleaners.
- Ventilation: Regularly check that the hollow structure of the bulb is free from obstructions to ensure proper heat dissipation.
- Storage: If storing the bulb for an extended period, keep it in a cool, dry place away from direct sunlight and moisture.
Troubleshooting
- Light not turning on: Check if the bulb is securely screwed into the E27 socket. Verify the power supply to the fixture is active. Ensure the remote control batteries are functional.
- Remote control not working: Replace the remote control batteries. Ensure there are no obstructions between the remote and the bulb.
- Light flickering: Ensure the bulb is not used in an enclosed fixture or with a dimmer switch not compatible with LED grow lights.
If you encounter any issues not resolved by the above steps, please refer to the Warranty and Support section for assistance.
Specifications
| Model Number | C21G-CE27-40W |
| Power Consumption | 40 Watts |
| Input Voltage | 220 Volts (AC) |
| Socket Type | E27 |
| Light Type | LED |
| Light Color Temperature | 4000K Daylight |
| Luminous Flux | 5600 Lumens |
| Color Rendering Index (CRI) | 95.0 |
| Beam Angle | 60 Degrees |
| IP Rating | IP20 (Indoor Use Only) |
| Materials | Ceramic, Polycarbonate (PC) |
| Dimensions (L x W x H) | 12.6 x 12.6 x 16.9 cm |
| Weight | 490 grams |
| Lifespan | 30,000 Hours |
| PPF | 67 µmol/s |

Image: A visual representation of the SANSI 40W LED Grow Light Bulb, detailing its dimensions (11.6 cm width, 13.8 cm height) and key specifications such as PPFD, color temperature, CRI, lumens, lifespan, and E27 base.
Warranty and Support
SANSI offers the following for your product:
- 30-Day Free Return: You are eligible for a free return within 30 days of purchase, no questions asked.
- 2-Year Warranty: A 2-year warranty is provided, allowing for a free replacement if any issues arise within this period.
For any problems or inquiries, please do not hesitate to contact us directly through the Amazon message system. Our customer service team is available to provide support.





