1. Press and hold the button below for 2 seconds to turn on/off, the system self-checks, the fill light turns on for 6s, and the first 8 display gears on the right side of the synchronous digital tube (the gears display for ) will automatically switch to display the ambient temperature after 4s Enter standby mode.2. The default sensing liquid, the first is 0.5s, 1s, 1.5s), and the has a memory function. When the liquid is detected by default, the fill light does not need to be turned on. The fill light needs to be turned on. After clicking the light button above, the light will be always on, and then click the light to turn off (when the light is not turned off, the system is set to automatically turn off the light within 3 minutes. ).3. Short press the button below to increase one , and then return to one after three gears, and do a cycle.4. When the digital screen is on, press and hold the light button for 2 seconds to switch between Fahrenheit and Celsius, the default Celsius, with memory function.5. When the liquid is sensed, the digital tube displays the ambient temperature for 4S.The three grids below 6 and 8 are used as display symbols. When the battery is low at 5%, the leftmost grid on the screen flashes at a frequency of 1 second.When charging at on, use a charging current of 0.8A, the digital tube displays the ambient temperature, and the scrolls from left to right. When the battery is fully charged, the ambient temperature and display icons are always on.When the battery is turned off and charging, the digital tube only displays the , and the is scrolling from left to right, and it is always on when fully charged.Gears: 1st (0.5s), 2nd (1s), 3rd (1.5s)285ML use : 1st (400 ), 2nd (200 ), 3rd (130 )Fill light duration: 3 minutes a single timeColour:WhiteMaterial:plasticSize:15 x 18 x 9cmPackage Contents:1 x 1 x Charging cable1 x Chinese and English instructions1 x Backplane adhesiveOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.