Ld 9104 high accuracy temperature & humidity data logger has internal high-precision sensors for temperature and humidity measurements. This device stores maximum 65000 measuring data automatically with selectable sampling intervals from 1s to 24h. It is equipped with intelligent data analysis and management software for data download, graph checking and analysis, ect. It is designed with lcd, led indicators and buttons. Realtime readings and alarm informations can be displayed on lcd. The two leds flash in red, green and yellow colors to indicate the status of working and alarming. It’s easy to operate with the two buttons to browse realtime readings, start/ stop logging and power on/off, etc. Features: 1. Mini size, easy to use 2. Water proof ip65 3. High accuracy 4. Alarm function 5. Including smart software for data analysis 6. Real time monitoring 7. Record 65000 data 8. Lcd display Specifications: Temperature range:-30?~70?(-22?~158?) Accuracy:±0.5? Humidity range: 0-100%rh Accuracy:±2.0%rh Temperature resolution: 0.1? Humidity resolution: 0.1%rh Data port:usb Sampling rate: 1s~24hours selectable Power: 3v cr2450 battery Size: 92x35x20mm G.W: 60g Accessories: battery, holder, software cd, manual & giftbox package