The OTS-30 (9Hz) have raised the standard for affordable, small, lightweight thermal imaging viewers. they’re pocket-sized, rugged and durable. These units are built around state-of-the-art uncooled thermal imaging technology. They offer superior performance, compact size, comfort of wear, and cost efficiency, making them the perfect choice for most any thermal imaging application. The ATN OTS-30 (9Hz) are ideal for home security, public safety, first responder and security operations.