ywmvcm 20W Monocrystalline Solar Dual Exhaust Fan Kit — 2×120mm Fans, USB Charging, IP54 Weather-Resistant

The ywmvcm 20W monocrystalline solar dual exhaust fan kit is a battery-free, daytime-only ventilation system that powers two independent 120mm fans plus USB charging directly from sunlight.

This compact solar ventilation kit pairs a weather-resistant 20W monocrystalline panel with two high-speed exhaust fans and independent switches, creating an affordable way to move air in off-grid or outdoor enclosures. It was designed for spaces that need reliable daytime airflow—chicken coops, greenhouses, sheds, RVs and pet houses—without drawing household electricity. The system includes mounting hardware and plug-and-play wiring so most users can install it quickly.

How much airflow and control does the kit provide?

The kit combines two 120mm fans that work together to deliver substantial daytime ventilation; each fan has its own on/off switch so you can set one or both to run depending on conditions. Fan speeds vary with solar intensity, giving stronger airflow during bright sunlight and lower output in early morning, late afternoon or cloudy weather.

• Up to 1200 CFM combined airflow under peak sun.
• Each fan independently controlled by a built-in switch.
• Speeds can reach around 2400 RPM in direct sunlight.
• No internal battery—operation matches available sunlight.

Will the panel survive outdoor exposure and wet weather?

The included 20W monocrystalline solar panel is rated IP54 for dust and splash resistance, so it tolerates rain and outdoor conditions typical for small structures. While it resists weather, mounting it in a secure, slightly angled position improves water runoff and long-term performance.

• IP54-rated panel frame for dust and splash protection.
• Durable monocrystalline cells for efficient daylight conversion.
• Mounting hardware included for secure outdoor installation.
• Recommended angled placement to shed water and debris.

Can I power other devices from the kit while the sun is shining?

Yes. The ywmvcm kit integrates two USB output ports that provide charging power when the solar panel is producing energy. This makes the system useful for charging phones, cameras, and small power banks during sunny periods useful for outdoor or mobile setups.

• Two USB ports for charging phones and small electronics.
• USB power available only while the panel is generating electricity.
• Great for RVs, camping, and remote sheds while sunlight is present.
• Not intended for large appliances or continuous night use.

How easy is installation and what support is available?

The kit ships with the mounting brackets, screws, and simple wiring to keep installation straightforward for most DIYers. No complex electrical work is required because the system is plug-and-play and runs directly from the solar panel. ywmvcm backs the product with a two-year manufacturer warranty and customer support to help with setup or troubleshooting.

• Complete mounting hardware included for wall or roof attachment.
• Plug-and-play wiring—no battery or inverter installation.
• 2-year manufacturer warranty for coverage of defects.
• Customer support available for installation questions.

Who is this for: The ywmvcm 20W dual exhaust fan kit is best for owners of small outdoor enclosures who want dependable daytime ventilation without grid power—farmers maintaining coops, gardeners controlling greenhouse heat, RV and camper owners improving airflow, or anyone needing solar USB charging alongside ventilation. It’s ideal when daytime-only operation meets your needs and you prefer a low-maintenance, weather-tolerant solar solution.