What is the quality of the infrared temperature sensor of Guangdong Saiya thermopile?

The price is ok, compared with the import price, it can't be too cheap, and the cost performance is still very high! Because there is no tariff and price difference, the price will be much cheaper than that of imported brands. The quality is also imported. I used to be forced to choose, but now it's different. I have a better and cheaper choice. Moreover, the infrared sensor of Saiya adopts MEMS thermopile chip and TO-46 package, which has great stability, sensitivity and accuracy. Why don't the landlord try this cheap product and don't worry too much about the import!