Measurement method：Non-Contact Effective distance：1cm~5cm Measurement Mode： Body mode:32.0°C~42.9°C(89.6°F~109.2°F) Surface Mode:0°C~100°C(32°F~212°F) Measurement Accuracy: Body Mode:±0.2°C/0.4°F Surface Mode:±1.0°C/°F Display resolution:0.1°C/°F Operating environment: 16° C ~ 35 ° C (60.8 ° F to 95 ° F) ≤ 80% moisture condensation Storage condition: - 25 ° ~ 55 ° C - (-13° F to 131 ° F)≤90% moisture condensation Power supply:DC 1.5V (2 AAA batteries) Power consumption: When off ≤ 10 uw ,When measuring≤ 30 mw Auto power-off:In 30 seconds Carton size:630*405*395mm Weight:About 125 g (without battery) Certification:Product complies with the European Directive on medical devices MDD 93/51/ EEC Medical CE ,ROSH,SFDA, ISO