Constant temperature test chamber, a perfect temperature chamber, equipped with programmable color touch screen controller. It was used in temperature and humidity environment test of electrical and electronic products, materials, textile, medicine package, etc. Model: 150CT-500CT Temp.Range: 10℃～100℃ Temperature Fluctuation: ＜±0.5℃ Temperature deviation:＜±1.0℃ Humidity deviation:＜±3%RH(control humidity＞75%RH), ＜±5%RH(control humidity≤75%RH) Power: AC 220V±10% 50HZ