Rapid temp. changing(humidity) test chamber also known as Environmental Stress Screening (ESS), AST (Accelerated Stress Testing), HALT (Highly Accelerated Stress Test), HASS (Highly Accelerated Stress Screening) or Burn-in test.

ESS chamber is suitable for the whole product, parts and materials for high temperature, low temperature, high and low temperature circulating and temperature stress screening (ESS) test, and constant humidity and cyclic damp heat test. This type of machine mainly used to simulate the product after exposure to rapid change of ambient temperature and in certain humidity conditions, detecting the product features and the adapt change ability.