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 higher limit of temperature alarm: Press the menu key back to set the temperature higher limit alarm value, and press the up/down keys to adjust the alarm cost 3. Set the lower restrict of temperature alarm: Press the menu key back to set the temperature lower limit alarm value, press the up/down keys to adjust the alarm value Measurement differ :-40 ° C~ 150° C Probe length:3m Power wire length:1 Instructions: Key function description: 1. Menu Enter operate strategies 2. Up key Adjust settings and methods 3. Down key Adjust ambiance charge reduction and selection The order of menu key operate suggestions is: 1. Alarm switch; 2. Set the higher restrict of temperature alarm 3. Set the lower restrict of temperature alarm Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Material: Plastic + Metal colour: As proven Voltage: AC100-240V Package Contents: 1 x Pool Thermometer 1 x Probe(3m) Only the above kit content, different item aren't included. Note: Light mirrored image and diversified displays could cause the color of the thing within the photo somewhat various from the real thing. The dimension allowed error is +/- 1-3cm.