1.The OLED screen at the top can display normally at low temperatures -40. 2.The front and the top screen display data at the same time. 3.Responsive,no freezing phenomenon in low temperature environment. 4.Dual use for Fe and NFe. Automatically identify the substrates and switch the modes. 5.Digital probe, temperature compensation. Provides accuracy and repeatability. Model: LS233 Measuring principle: Fe: Hall Effect / NFe: Eddy current Measuring range: 0.0-2000m Resolution: 0.1m:(0m-99.9m) 1m:(100m-999m) 0.01mm: (1.00mm-2.00mm) Accuracy: less than (3% reading+2m) Unit: m / Measuring interval: 0.5s Minimum measuring area: Diameter 25mm Minimum curvature: Convex:5mm / Concave:25mm Minimum substrate thickness: Fe:0.2mm / NFe:0.05mm Display: Front: 128*48 dot LCD; Top: 128*64 dot OLED Operation temperature: LCD -20-50 ; -40-50 (The top OLED screen) Storage temperature: -50-60 size: 100x60x24mm Power supply: 2 X AAA batteries (not included) Colour:blue Material:ABS Package Contents: 1X paint film meter 1X iron-based zero adjustment board 1X aluminum base zero adjustment board 1X standard film 1X English manual 1X cloth bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.