Adjustable Alarm Functions:Offers customizable upper and lower temperature alarm settings for precise monitoring. Wide Measurement Range:Capable of measuring temperatures from -40C to 150C, ideal for diverse environments. Product parameter: Measurement range :-40 C~ 150 C Power cord length:1.5m Size:245 x 136 x 24mm Instructions: Key function 1, Menu Enter function options 2,Up key Adjust settings and options 3,Down key Adjust setting value reduction and selection The order of menu key function options is: 1. Alarm switch; 2. Set the upper limit of temperature alarm 3. Set the lower limit of temperature alarm Product function 1. Alarm swftch: Long the menu button to enter the menu function, short the up button to turn onoff the alarm switch 2. Set the upper limit of temperature alarm: the menu key again to set the temperature upper limit alarm value, and the updown keys to adjust the alarm value 3. Set the lower limit of temperature alarm: the menu key again to set the temperature lower limit alarm value, the updown keys to adjust the alarm value Use scenario: swimming pool, aquarium, sauna room etc Company Profile Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage: AC220V Color: As Shown Material: Plastic+Metal Package Contents: 1 x Digital thermometer Only 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.