Check the listing for details. Photonix Technologies PX B220 optical power meter. Fiber Optic Testing. Condition: Used. Listed at 220.00 USD. Introducing the Photonix Technologies PX B220 optical power meter, a reliable and accurate tool for testing fiber optic systems. With its handheld form factor, this product is easy to use and perfect for professionals in the industry. Made in the United States, it boasts a variety of optical interfaces including SC and LC, allowing for flexibility in testing different types of systems. Whether you're in the business and industrial or test, measurement, and inspection industry, this product is an excellent addition to your toolkit. Don't miss out on the opportunity to enhance your testing capabilities with the Photonix Technologies PX B220 optical power meter. I don't know how long the battery lasts, but it does stay on after only a few minutes on the charger.