monitor 1. Alarm swftch: Long press the menu button to enter the menu function, short press the up button to turn on/off the alarm switch2. Set the upper limit of temperature alarm: Press the menu key again to set the temperature upper limit alarm value, and press the up/down keys to adjust the alarm value3. Set the lower limit of temperature alarm: Press the menu key again to set the temperature lower limit alarm value, press the up/down keys to adjust the alarm value 1. Alarm swftch: Long press the menu button to enter the menu function, short press the up button to turn on/off the alarm switch 2. Set the upper limit of temperature alarm: Press the menu key again to set the temperature upper limit alarm value, and press the up/down keys to adjust the alarm value 3. Set the lower limit of temperature alarm: Press the menu key again to set the temperature lower limit alarm value, press the up/down keys to adjust the alarm value Measurement range :-40 C~ 150 C Probe length: Power cord length:1.5m 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 Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Material: Plastic + Metal colour: Voltage: AC100-240V Package Contents: 1 x Pool Thermometer 1 x Probe()