The Optoma EX525ST is a compact and versatile projector that is designed for both personal and professional use. However, this particular product is being sold as faulty for spares or repair, as it is missing its power supply unit (PSU). This means that the projector is unable to function properly without the necessary power source.

Despite this issue, the projector is still able to power on, indicating that the internal components are likely still in working condition. This makes it a great option for those who are looking for spare parts or are skilled in repairing electronic devices.

The Optoma EX525ST is known for its high-quality image projection, with a brightness of 2500 lumens and a contrast ratio of 3000:1. It also has a short throw lens, allowing it to project a large image from a short distance. This makes it ideal for small spaces or presentations in tight quarters.

In addition, the projector has multiple connectivity options, including HDMI, VGA, and USB, making it compatible with a variety of devices. It also has built-in speakers for convenient audio playback.

Overall, the Optoma EX525ST is a reliable and versatile projector that can be used for various purposes. While it may require some repairs or a replacement PSU, it still has the potential to provide high-quality projection and serve as a valuable asset for those in need of spare parts.