Display LCD display, Resolution 0.1(0.1ºF) Operating Temp. 10 to 40C (50 to 104.0F) Storage Temp. 0 to 50C(32 to 122F) Humidity Rate 85% Power DC 3.0V (2 * 'AAA' batteries) Size 149(L)*95(W)*45(D) MM/5.9*3.7*1.8 inch Weight 140g without batteries Measurement Range Human 32.0 to 42.9 (89.6 to 109.3F) Surface 0 to 100 (32 to 212.0 F) Precision Human 0.2 (0.4F) 36.0 to 39.0â??(96.8 to 102.2�ºF) 0.3 (0.5F) 32.0 to 35.9 (89.6 to 96.2F) ±0.3(0.5F) 39.0 to 42.9(102.2 to 109.2F) Surface ±1.0(1.8F) 0 to 100(32 to 212.0F) Measuring Distance 3 to 5 cm Backlight Body mode 32.0 to 37.4 (86.0 to 99.3F) Green 37.5 to 37.9 (99.5 to 100.2F) Orange 38.0 to 42.9 (100.4 to 109.2F) Red SURFACE mode and ANIMAL mode always keep GREEN colour Automatic stop 7 sec Response time 1 sec Features * Precise non-contact measurements * User selectable * Set Alarm value * Memorisation of the last 99 measurements * Automatic Data Hold and auto power off * Automatic selection range and display resolution 0.1(0.1F) * 3 colours backlight LCD display * 3 modes: body mode, surface mode, animal mode Material Shell : Anti-bacterial ABS