Range : -10 C to +250 C Accuracy : +/- 2 C or +/- 2 % Operating Temperature : 0-50 C Key Features : Built-in digital camera: Yes Thermal heat map overlay: Yes, five blending modes Image optics system: Pyro Blend Plus optic :4x sharper image than VT02 Field of view: 28 x 28 Hi-Lo temperature alarms: Yes Time lapse image capture: Yes Auto-monitor alarm: Yes Battery type: Li-Ion rechargeable Training: No training required Ergonomics: Slim pocket-sized design Hot and cold markers: Yes Battery life: Eight (8) hours Temperature measurement Range: -10 C to +250 C (14 F to 482 F) Temperature measurement accuracy: +/- 2 C or +/- 2 % Temperature measurement: Yes, centerpoint Storage medium (micro SD card): Stores up to 10,000 images per Gb (Four (4) Gb card included) Focus mechanism Focus free, no training required with built-in intelligence Focus options-exclusive user Selectable NEAR/FAR options: NEAR < 23 cm (9 in) FAR > 23 cm (9 in) Dimensions: 21 cm x 7.5 cm x 5.5 (8.3 in x 3 in x 2.2 in) < 350 g. (12.5 oz.) File format: .is2 format saved to SD card. User can create professional reports or export imagesin