Acoustiv Fever Alarm. Precise Body Temperature Measurement: Oral, Axillary, Rectal. Fever Is The Body´S Alarm Signal That Should Be Recognized And Paid Attention To. Measure Body Temperature Accurately With The Ftc, With Three Methods To Choose From: Oral (Under The Tongue), Axillary (In The Armpit) And Rectal (In The Anus). The Thermometer Remembers The Measurement Result Thanks To Its Automatic Memory Function, With The Last Result Briefly