Introduction: High-low temperature and humidity chamber is a kind of environment test chamber, designed according to IEC60068-2-1, IEC60068-2-2 and IEC60068-2-3. It can accurately simulate the conditions of low temperature, high temperature,low temperature & himudity and high temperature & humidity. It is applied to the industies of electonic, battery, plastic, food, paper, car, LED lamps and so on. Specification: Temperature range:0~+150℃ -20℃~+150℃ -40℃~+150℃ -60℃~+150℃ Humidity range:20%~98% R.H. Temperature: ±0.01℃； humidity: ±0.1% R.H. Fluctuation/Evenness: ±0.5℃/±2℃ Temperature rise speed: 2℃-4℃/min Temperature down speed 0.7℃-1℃/min Humidity fluctuation: ±2.0%R.H.