Amazon needs to provide a UL499 test compliance report before it can be sold on the shelves.

The constant temperature coaster can maintain the temperature of the water in the cup at a suitable drinking temperature for a long time, which is convenient for people to drink hot water, especially in winter, it is very convenient to use, and it can also avoid drinking too hot or too cold water . The constant temperature coaster needs power supply. There are two kinds of power supply on the market. One is the USB interface, which can be plugged into the UBS socket of the computer or the mobile phone charger for power supply; the other is the 220V AC power plug, which requires Plug into our daily power supply jack to use.

Constant temperature coaster UL499 test report process:

1. The applicant submits an application.

2. The applicant fills in the application form, and the instructions and technical parameters are provided to the laboratory together.

3. The laboratory determines the test standards and test items based on the situation and category of the seller's platform and makes a quotation.

4. The applicant confirms the quotation and the two parties sign an agreement.

5. After passing the test, a UL test report will be issued.

Constant temperature coaster UL499 test items include:

1. Leakage current test

(1) Methods and conditions : place the prototype on an insulating plane to test the leakage current between bare non-charged metal parts or between a plastic casing ( with the help of 1*500px tin foil ) and an uncharged conductor, and the following conditions are required to be tested Leakage current of : a) Before power- on

b) Electric heating until thermal equilibrium .

c) After a power outage

(2) Requirements : leakage current ≤ 0.5mA .

2. Input test

(1) Methods and conditions : The prototype is connected to an adjustable voltage of 120v , 60Hz , fully heated, and the power under 120v and the voltage required to achieve the rated power are monitored.

(2) Requirements : 90% of nominal power ≤ test power ≤ 105% of nominal power.

The constant temperature coaster heats up quickly, does not consume electricity, is a small household appliance, does not take up space, is easy to carry, regular products will not leak electricity, and is safe to use , it is a winter home companion.

The UL499 test content of constant temperature coaster is as follows:

1. Leakage current test

2. Input test

3. Leakage current test under tidal state

4. Normal temperature rise test

Five, high pressure test

6. Stability test

Seven, abnormal test (DRY)

Eight, abnormal test (BYPASSED REGULATING DEVICE)

9. Static pressure and strength test

10. Blown fuse test

11. Power cord pull test

12. Power line thrust test

13. Plastic deformation test

14. Impact test

15. Overflow test

16. Grounding resistance test

Seventeen, waterproof gasket aging test

If merchants want to sell thermostatic coasters on Amazon, they must abide by Amazon's relevant regulations.