Features： 1、Principle: Thermoelectric refrigeration module is used to generate low temperature on a special semiconductor through direct current and conduct it to the medicine box, and the radiator radiates heat through the fan. 2、Touch Screen Design: 0?18℃ can be adjusted, and the LED display screen can observe the temperature, battery power and working state of the fan in real time, which is suitable for cold storage of various medicines. 3、Safe Storage: The circular arc angle design of aluminum liner prevents drugs from bumping in the box, and the sandblasting anodizing process makes the refrigeration temperature last. 4、Portable: Insulin cooler box is small in size and light in weight, and equipped with a customized handbag, and at the same time prevents the instrument from scratching and breaking, thus better protecting the instrument. 5、Applicable Scenes: Connecting adapters, charging treasures, car USB interfaces, etc., can be used in travel, home, office, vehicles, pharmacies, hospitals and other places. Specification： Item Type: Mini Insulin Refrigerator Material: ABS, acrylic, electronic components Battery: 1pc NCR18650B lithium battery pack (not included) Temperature Adjustment Range: 0-18℃ Voltage: 5V 3.4A. Power: 10W Main Machine Size Of Refrigerator: Approx. 210 x 95 x 103mm / 8.3 x 3.7 x 4.1in Refrigeration Room Size: Approx. 175 x 60 x 25mm / 6.9 x 2.4 x 1in Refrigeration Room Capacity: 3-5 insulin pens or about 10 insulin pens can be put. Power Supply Mode: USB cable connection adapter, charging treasure, car USB interface, etc. Applicable Places: Travel, home, vehicles, offices, pharmacies, hospitals and other places. Suitable For Cold Storage: Drugs and biological agents such as insulin and interferon that need to be refrigerated. Product Principle: This product uses thermoelectric refrigeration components, that is, semiconductors to realize refrigeration. On special semiconductors, low temperature is generated by direct current and transmitted to the medicine box, and the heat is dissipated by the radiator through the fan. Product Characteristics: Intelligent temperature control, LED liquid crystal display, semiconductor instantaneous refrigeration technology, stable performance, long life, low noise and no fluorine pollution, small size, light weight and easy to carry. How to Use First, the method of use: 1. Power on: ① External power supply: When there is no built-in lithium battery in the host, when the power adapter or USB power supply is connected, the machine will beep to indicate that it is powered on, and the machine will automatically detect whether the battery is installed. If there is no battery, the full battery will be displayed on the screen. 2, switch machine: ① Boot: Press the power button for 1 second, and after a beep, the screen will light up, and the temperature will show the current temperature in the box, as well as the battery charge and the working state of the fan. ② Shutdown: press and hold the power button for 3 seconds to shut down. After shutdown, if there is a battery in the machine, only the power mark will be displayed on the screen. 3. Setting temperature: The temperature setting range of the refrigeration box is 0-18℃. Press the ▲▼ key directly, and the temperature will flash. At this time, the required refrigeration temperature can be set. Second, the power supply mode 1. Power adapter: If there is no lithium battery, the power adapter can be used. 2. USB power cord: it can be connected to mobile phone USB charger, charging treasure and car USB converter. Pay attention to the voltage of 5V and 2.1A when using USB, otherwise it will burn. Third, the fault analysis 1. The machine does not cool at all: The interface of the cooling chip may be loose or the cooling chip may be damaged. 2. The displayed temperature exceeds 30 degrees: Check whether the fan works and whether the ventilation hole is blocked. 3. The temperature is not too cold: Check the set temperature, check whether the cooling hole is blocked, whether the ambient temperature exceeds 35 degrees Celsius and is too high, the cover is opened too many times, and the opening time is too long. 4. The screen shows E1: The temperature sensor is faulty and needs to be replaced. 5. Excessive noise: Check whether there are sundries in the fan. Package List： 1 x Mini Insulin Refrigerator 1 x Handbag 1 x USB Cable