Helps you detect fevers via your child's forehead or ear Accurate to plus or minus 0.2 ℃ / + / - 0.4 ℉ Works effectively in 10-40℃ or 50-104℉, relative humidity 95 (condensation) Most effective when used at intervals of at least 4 seconds Features an automatic shutdown function to conserve power Records up to 9 measured values, along with the date and time display Powered by 3v AAA batteries Measures 127.5cm x 18.5cm x 10.5mm Screen size: 43mm x 15mm