Temperature Label – LI

Temperature Label - LI

A large, visible, and durable single-point indicator well suited for interpretation from a distance

Label and package
Color sample

Number of elements: One
Element size: φ11mm (LI-40~105)/φ8mm (LI-110~250)

Temperature range: 40 – 250°C
Content: 40pcs/pkg

RoHS compliant

This single point indicator is clearly visible from a distance. Because of its durability and the strength of its adhesive, it is recommended for use in temperature monitoring outdoors under harsh weather conditions. You can also use it indoors, for instance for temperature control in manufacturing lines. The most common users are railway companies and power companies. In some power companies, this type of indicator is used extensively for transmit equipment to prevent accidents and to optimize security control by controlling temperature.
Above all, this indicator type is the best choice for all outdoor temperature monitoring from a distance because of its bigger element size and outstanding durability.

Sample Usage

Color Transition Simulation

Product Features

・1-point temperature indication
・Irreversible, single-use
・Temperature range: 40°C to 250°C
・The color changing element is securely sealed in heat-resistant film to avoid damage by environmental factors such as water, chemicals, oil,  etc.
・Self-adhesive and easy to apply on various locations. (the back side is coated with heat-resistant adhesive material).

The dimensions of the reactant elements are φ11mm for Ll-40˜105 and φ8mm for Ll-110˜250

PNColor change temp.(℃)BeforeAfterAccuracyJAN Code
Ll-5555WhiteDark blue±2℃4582130420041
Ll-7070WhiteReddish orange±2℃4582130420072
Ll-7575WhiteDark red±2℃4582130420089
Ll-8585WhiteDark blue±2℃4582130420102
Ll-100100WhiteDark red±2℃4582130420133
Ll-110110WhiteDark blue±2℃4582130420157
Ll-115115WhiteReddish orange±2℃4582130420164
Ll-170170Yellow grayBlack±2℃4582130420232
Ll-180180Pale yellowBlack±3℃4582130420249
Ll-190190Pale yellowBlack±3℃4582130420256
Ll-200200Pale yellowBlack±3℃4582130420263
Ll-210210Pale yellowBlack±3℃4582130420270
Ll-220220Pale yellowBlack±3℃4582130420287
Ll-230230Pale yellowBlack±3℃4582130420294
Ll-240240Pale yellowBlack±3℃4582130420300
Ll-250250Pale yellowBlack±3℃4582130420317

40 pcs / package

Dimension of reactant element is φ11mm for Ll-40˜105 and φ8mm for Ll-110˜250

PN Color change temp.(℃) Before After
Ll-40 40 White Blue
Ll-45 45 White Black
Ll-50 50 White Red
Ll-55 55 White Dark Blue
Ll-60 60 White Green
Ll-65 65 White Black
Ll-70 70 White Reddish orange
Ll-75 75 White Dark Red
Ll-80 80 White Blue
Ll-85 85 White Dark Blue
Ll-90 90 White Red
Ll-95 95 White Black
Ll-100 100 White Dark Red
Ll-105 105 White Green
Ll-110 110 White Dark Blue
Ll-115 115 White Reddish Orange
Ll-120 100 White Blue
Ll-125 125 White Black
Ll-130 130 White Black
Ll-140 140 White Black
Ll-150 150 White Black
Ll-160 160 White Black
Ll-170 170 Yellow gray Black
Ll-180 180 Pale yellow Black
Ll-190 190 Pale yellow Black
Ll-200 200 Pale yellow Black
Ll-210 210 Pale yellow Black
Ll-220 220 Pale yellow Black
Ll-230 230 Pale yellow Black
Ll-240 240 Pale yellow Black
Ll-250 250 Pale yellow Black

40 pc/ package


Color Change
  • The color-change temperature and color-change accuracy refer to the temperature and degree of accuracy at completion of a color change after heating from room temperature at a rate of between 2 and 3°C/min under normal pressure. The actual color-change temperature may differ depending upon heating conditions.
  • The performance of irreversible temperature labels which change color at 130 or higher may be changed if it is exposed to temperatures in the 10from the specified temperature.
  • The temperature-indicating elements of irreversible temperature labels may show slight coloration even before temperature increases, but performance will not be affected and it will be obvious when the color changes at the specified temperature.

Affixing the Label

  • Be sure to clear the surface of all water, oil, rust, dust, and dirt. Dirty or uneven surfaces can result in abnormal color changes or cause labels to come off.
  • When applying the label, peel off the release liner and put the label on the object by pressing it down gently with your hand or a cloth. Do not rub or scratch the label too strongly to avoid inaccurate color changes caused by damage or deformation.
  • Apply the label on a flat surface to avoid inaccurate color changes.
  • Do not alter the shape of the label. Modifying the label, for example by cutting it with a utility knife, may affect the label’s durability or lead to inaccurate color changes.

Usage and Storage Environments

  • Do not use the product in high-pressure or high-vacuum environments or in microwave ovens or other induction heating devices, as this could lead to inaccurate color changes.
  • Store in a cool dark place prior to use. Products specified as requiring cold storage should be kept refrigerated.
  • NiGK Corporation will not accept any liability for damages incurred as a result of using the product or applying measurements given by the products.

Information on toxic substances in the raw materials

The temperature label LI contains no toxic substances according GHS classification except for LI-110, LI-120, LI-180, LI-190, LI-200, LI-210, LI-220, LI-230, LI-240, and LI-250. Please refer to the SDS of the applicable products for details.

Directive of RoHS

Temperature label LI does not contain any chemical substances prohibited by the RoHS directive.

Hazard identification

Immediate health, physical, and environmental hazards: The environmental properties of this product present a low environmental hazard. This product, when used under reasonable conditions and in accordance with the directions for use, should not present a health hazard. However, use or alteration of the product in a manner not in accordance with the product’s directions for use may affect the performance of the product and may present health and safety hazards.


The information on this page is believed to be correct as of the date of issue. Neither the selling or producing company provides any warranties, expressed or implied, including, but not limited to, any implied warranty of merchantability or fitness for any particular purpose, course of performance, or usage of trade. The user is responsible for determining whether this product is fit for a particular purpose and whether it is suitable for the user’s method of use or application. Given the variety of factors that can affect the use and application of this product, some of which are uniquely within the user’s knowledge and control, it is essential that the user evaluate this product to determine whether it is fit for a particular purpose and suitable for the user’s method of use or application.

*Temperature label, RETOMARK, UVLABEL and DEWLABEL in all content including the digital catalog on this website are registered trademarks of NiGK Corporation in Japan.