Fast Change Rate Chambers from Weiss Envirotronics provides temperature and humidity testing withflexibility through intelligent engineering, ergonomic design, broad temperature range and lasting reliability and durability. Available in many standard model configurations that fit most testing applications,the Xcel Series includes standard features that allow for accurate and precise product testing.Optional accessories allow you to customize your testing applications.The easy-access panels allow for easy maintenance. The Xcel Series provides fast change rates and accurate testing in a compact design.