... humidity detection system, The CJ-640 can automatically detect the temperature and humidity in the working environment, adjust relevant settings to ... , the CJ-640 equips the excellent expansion capability. For example, up to eight 640Amphis II can be connected to a computer ... ~240V AC,50/60HzOperating Temperature15° ~ 30°C (59° ~ 86°F)Operating Humidity20 ~ 85% RHDimensions (WxHxD)264 mm x 144.4 mm ...