250 watt 900x900x400mm Industrial use negative pressure type Solar Air Extractor Wall Fan

Product Characteristics & Functions:

1) Clean & Free Solar Energy powered, No commercial electronic consumption.

2) Once Pay, Benefit Long!

3) Cut off conventional monthly boring electricity bills.

4) No manual operation, No maintenance!

5) Value-Added, will pay itself back for you soon after one year.

6) High Quality, Prospective Innovation!

Our advantages / innovations from existing industrial exhaust fans:

1. Direct solar panel power supply, No need of commercial electricity!

2. Flexible Tailor-Make Service, can add a Mains Switch Controller into product to hybrid use the solar panel supply and public electricity supply to have the ventilating fans work continuously after dark or in cloudy periods.

3. Brushless DC fan motor, less energy loss, smaller consumption of commercial electricity than conventional AC motored ventilating fans.

4. Intelligent Mains Switch Mechanism between solar panel supply and public electricity supply, automatically realized by the Mains Switch Controller.

Standard Model Selections:

How are the fans pay themselves back for you after one year?

We offer Tailor-Make Service, simply tell us your requirements and we'll help you to turn all kinds regular electric industrial fans into cost-free solar exhaust fans!