You will find answers to all of your most common Electrical Services related questions located here.
A1: Place in 2 * AAA batteries in the right way. Aim at the forehead middle, keep about 3cm away, Pull the trigger.
A2: Press Key “M” for 2 to 3 seconds to enter “F1”setting mode, press “+” for one second, Pull trigger key to start working. NOTE: It will stay in ℃ mode for next time’s power on. And if you need to change ℃ to ℉ mode, use the same way.
A3: Press “M” for one second, it will be into “Surface Temp” mode, then pull the trigger.
A2: Take out the batteries and keep 5 seconds. Re-place the batteries in when press “+” and “M”, after hearing 2 beeps, Press “-”to enter into calibration mode. Take the data of 35 ℃ standard body and 40 ℃ standard body respectively according to the sequence. Then change to the Surface temperature mode to test and verify.