Before buying this thermometer I inquired about his quality and I chose this one because there was an option to remove the beep (the pressure of the trigger or if the temperature of the body is more 38 °). The instructions in lines indicated that it was easily achievable. Unfortunately, this is the version of "Evolution", which is simplified and does not have this option. One is therefore forced to do with the Beep. Very handy when her baby is sick and sleeps ... I therefore refer to Amazon and will seek the LX-26, without E after.