Digital Temperature Humidity Meter High-Precision Portable Household Indoor Outdoor Measurement Tool Thermometer hygrometer 1>We always have enough products in stock. 2>We send all the parcels by registered Airmail except you specify another shipping method. All parcel has tracking number. 3> This unit doesn't include batteries. Because the international air shipping forbid us to ship liquid, powder and batteries, so we can not put them in the package. Hope you can understand & buy the batteries in your local store or supermarket. Thanks for your support! If you don't accept this, please do not place an order . 4>For big order, we'll provide you big discount. 5-All of our products are under 1 year guarantee This meter combines thermometer / hygrometer and provides accurate instant readings of ambient environment. It's handheld and easily fits in your pocket. It has everything you need to charge an air-conditioning system and determine heating, cooling, and ventilation needs. It is widely used on lab, warehouse and air conditioning system, etc. Large screen dual display. Temperature and humidity measurement Temperature and humidity maximum minimum value side beam. Dew point temperature measurement. Keeping data Celsius degree Fahrenheit unit conversion. USB interface setup data download. Low electricity prompt Automatic shutdown Temperature and humidity recorder. With a large amount of data storage capacity, it can store 16,000 sets of temperature and humidity data. Multiple data protection mechanisms. With PC analysis software, it is easy to use and operate with customers. Measurement range: Temperature:-30 C -80 C Precision: Temperature:1C (1.8F) Typical temerature:0.3C (max1C) Humidity:3% RH (in 25, 20-80% RH) For big order, we'll provide you big discount. 5-All of our products are under 1 year guarantee This meter combines thermometer / hygrometer and provides accurate instant readings of ambient environment. It's handheld and easily fits in your pocket. It has everything you need to charge an air-conditioning system and determine heating, cooling, and ventilation needs. It is widely used on lab, warehouse and air conditioning system, etc. Large screen dual display. Temperature and humidity measurement Temperature and humidity maximum minimum value side beam. Dew point temperature measurement. Keeping data Celsius degree Fahrenheit unit conversion. USB interface setup data download. Low electricity prompt Automatic shutdown Temperature and humidity recorder. With a large amount of data storage capacity, it can store 16,000 sets of temperature and humidity data. Multiple data protection mechanisms. With PC analysis software, it is easy to use and operate with customers. 1 x Humidity & Temperature meter 1 x Instruction manual