Caution: color: we shlp according to the color of the first picture, in the package: if the quantity is not stated in the description, we will shlp the item according to the quantity and model in the title. Tenmars tm-747d 4-channel thermometer seven thermocouple type selections:k,j,t,e,r,s,n,usb pc serial interface:windows xp /7~10 the product is shlpped based on the color or size of the main image of the product page. Tm-747d 4-channel thermometer-seven thermocouple type selections: k,j,t,e,r,s,n-datalogging capacity 16,800 records.-Relative rel measurement-selectable ¡ãc/¡ãf/¡ãk units-dimension:168x73x35mm lxwxh -weight:approx. 330G-max /min /avg /time and data hold functions-dual lcd displays t1-t2 and t3-t4.-Hi/lo audible alarm functions-usb pc serial interface:windows xp /7~10.Specification range type-k: -200to +1372-328¨Hto +2501¨H type-j:-210to +1200-346¨Hto +2192¨H type-t:-250to +400-418¨Hto +752¨H type-e:-210to +1000-346¨Hto+1832¨H type-r / s:0to+1767+32¨Hto+3212¨H type-n:-150to+1300-238¨Hto+2372¨H resolution 0.1 K / j / t / e / n1000 1 r / s and k / j / t / e / n¡Ý1000 accuracy k/j/e/t/n type: ¡À 0.05% Rdg + 0.7¡ãC / 1¡ãf ¡À 0.05% Rdg + 0.7¡ãC / 1¡ãf below-100 ¡ãc -148 ¡ãf : k, j, t, e + 0.15% Reading. N + 0.45% Reading r/s type: ¡À 0.05% Rdg + 3¡ãc / 5.4¡ãF temperature coefficient 0.05%¡À0.07¡ãC of reading/¡ãc 0.06¡ãF/¡ãf outside +18¡ãc to28¡ãc +64¡ã fto +82¡ãf specified range temperature scale its-90 the above specifications do not include accuracy of thermocouple.