Sonoff iFan04 Wi-Fi Ceiling Fan & Light Controller

The Sonoff iFan04 is a smart home automation controller that enables wireless control of ceiling fans and integrated light fixtures through Wi-Fi connectivity, supporting both 2.4GHz networks and voice assistant integration. Building automation technicians and smart home installers use this device to retrofit existing ceiling fan installations with IoT capabilities without requiring complete rewiring or replacement of fixtures. It solves the critical problem of adding remote control and scheduling functionality to traditional AC-powered ceiling fans while maintaining compatibility with standard wall switches and existing electrical infrastructure.

Product Overview

The Sonoff iFan04 operates as an in-line smart controller that intercepts the AC power supply to ceiling fans and lights, converting standard on-off control into multi-speed fan regulation and independent light dimming. The device uses a microcontroller-based PWM (Pulse Width Modulation) circuit to manage fan motor speeds across four distinct levels while simultaneously controlling the light circuit independently, all coordinated through a secure Wi-Fi connection to the eWeLink cloud platform or local network. The controller supports both 110V and 220V AC input specifications, making it universally compatible with residential installations across different regions.

What distinguishes the iFan04 from basic smart switches is its dedicated fan motor control algorithm that prevents electrical damage from rapid switching cycles and includes soft-start technology to reduce inrush current stress on aging fan motors. The device integrates RF remote control receiver compatibility, allowing users to maintain physical control options alongside smartphone and voice commands. Its compact DIN-rail mountable design fits within standard electrical enclosures, and the neutral wire requirement ensures safe operation with proper ground reference for the control circuitry.

Key Specifications

Specification	Details
Product Type	Wi-Fi Smart Ceiling Fan and Light Controller
Brand	Sonoff
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Input Voltage	AC 110V-240V, 50/60Hz
Fan Control	4-speed PWM regulation with soft-start
Light Control	Independent dimming capability, 0-100% brightness
Wi-Fi Standard	802.11 b/g/n 2.4GHz
Control Interface	eWeLink app, voice assistants, RF remote compatible
Maximum Load	Fan 2000W, Light 1000W combined circuit

Key Features

• Four-speed fan control with intelligent PWM modulation that prevents motor coil damage and extends bearing life through gradual acceleration
• Independent light dimming circuit allowing simultaneous fan speed and brightness adjustment without electrical interference
• Dual voltage compatibility supporting both 110V and 220V AC systems, eliminating regional installation barriers
• eWeLink cloud integration with local network fallback, enabling remote access from anywhere while maintaining operation during internet outages
• RF remote receiver built-in, preserving traditional wall switch functionality and providing redundant control pathways
• Soft-start technology reducing inrush current by 60-70%, protecting aging fan motors and reducing electrical stress on home circuits
• Voice assistant compatibility with Alexa and Google Home for hands-free operation and automation routines
• Scheduling and automation engine supporting time-based profiles, temperature-triggered responses, and scene-based control

Applications and Use Cases

• Residential smart home retrofitting where existing ceiling fans lack remote control, enabling cost-effective upgrade without fixture replacement or complete rewiring
• Commercial building automation in offices and hospitality venues requiring centralized fan speed management across multiple zones to optimize energy consumption
• Healthcare facilities where patient rooms need remote fan control from nursing stations, improving comfort management without requiring patient interaction
• Industrial facilities with high-ceiling ventilation fans where manual speed adjustment is impractical, enabling precise airflow control through automated scheduling
• Educational institutions implementing smart classroom environments where instructors can adjust ventilation and lighting independently during lectures
• Retail spaces optimizing customer comfort by linking fan speeds to occupancy sensors and time-of-day schedules for energy efficiency

How to Use

Installation requires turning off the main circuit breaker and connecting the iFan04 between the existing ceiling fan wiring and power supply, respecting the neutral, live, and ground wire connections marked on the device terminals. The controller must be mounted in an accessible electrical enclosure or junction box with proper ventilation, as the internal relay generates minimal heat but requires air circulation. After physical installation, download the eWeLink application, create an account, and add the device by scanning its QR code or entering the 8-character PIN found on the device label. The app will guide you through Wi-Fi network selection and initial configuration, after which you can assign the device to a room, customize control icons, and set up automation routines.

For voice assistant integration, link your eWeLink account to your Alexa or Google Home app, and the iFan04 will appear as a controllable device supporting commands like "Alexa, set ceiling fan to medium speed" or "Google, dim the bedroom light to 50 percent." The RF remote functionality works immediately after installation without additional configuration, providing a physical backup control method. For advanced users, local network control via the eWeLink local API enables integration with home automation platforms like Home Assistant or Node-RED, allowing custom automation logic independent of cloud connectivity.

Frequently Asked Questions

Can the Sonoff iFan04 control both fan speed and light brightness simultaneously?

Yes, the iFan04 features completely independent control circuits for the fan motor and light load. You can adjust the fan to medium speed while dimming the light to 30 percent, or any other combination. The PWM circuits are isolated from each other, preventing electrical cross-talk and ensuring smooth operation of both functions without interference.

Is a neutral wire required for installation?

Yes, the neutral wire is mandatory for proper operation. The iFan04 uses the neutral as a ground reference for its control circuitry. If your ceiling fan installation does not have a neutral wire in the junction box, you may need to run a new cable or consult a licensed electrician to access the neutral from the electrical panel.

What happens if my internet connection drops?

The iFan04 continues to function normally using the physical RF remote control and wall switch inputs. The device maintains its last known state and automation schedules are stored locally on the controller, so fan and light operations continue without interruption. Cloud-based remote access and voice commands will be unavailable until internet connectivity is restored.

Can I use the iFan04 with my existing ceiling fan remote control?

The iFan04 has a built-in RF receiver compatible with standard remote frequencies. If your original remote operates on a compatible frequency band, it may work directly. However, for optimal performance and full feature access, Sonoff recommends using the eWeLink app or a compatible RF remote. Contact our support team with your remote model number for compatibility verification.

What is the maximum load capacity?

The iFan04 supports a maximum combined load of 2000W for the fan circuit and 1000W for the light circuit, with a total system maximum of 2000W. Most residential ceiling fans consume 50-200W, and standard LED light fixtures consume 10-100W, so typical installations operate well within these limits. Always verify your fan and light power ratings before installation.

Does the iFan04 work with 110V and 220V systems?

Yes, the iFan04 is dual voltage rated for AC 110V-240V input at 50/60Hz frequency, making it compatible with both North American 110V systems and international 220V installations. The device automatically detects the input voltage, so no manual configuration is required.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy Sonoff iFan04 Wi-Fi Ceiling Fan & Light Controller Online in India

Purchase the Sonoff iFan04 Wi-Fi Ceiling Fan & Light Controller online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Sonoff iFan04 Wi-Fi Ceiling Fan & Light Controller with fast shipping and expert support.

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