以下是一份台湾贝克莱斯 BK8621C 温湿度计的产品中英文介绍：

台湾贝克莱斯 BK8621C 温湿度计是一款便携式、高性能的测量仪器，适用于多种环境的温湿度检测。它采用高精度的 Pt385/1000Ω RTD 温度传感器，温度测量范围为 -20℃至100℃，解析度可达 0.1℃，在 0℃至50℃的常用温度区间内，精确度为 ±0.5℃。湿度方面，配备快速反应的电容式湿度传感器，测量范围为 0%至100%RH，解析度为 0.1%RH，在 25℃、10%至90%RH 的环境下，精确度为 ±2.5%。

该温湿度计的显示屏幕为 3½ 位数字液晶显示，即使在光线较暗的环境中，背光功能也能让用户清晰读取数据。此外，它还具备读值及最大值锁定功能，方便用户记录和对比测量结果。坚固的防震外壳设计，使其能够适应各种复杂的工作环境，同时附带携带型皮套，便于用户随时随地进行测量。其操作环境为 0℃至50℃，储存环境在 -20℃至60℃、0至80%RH（电池移除后），尺寸为 170mm（高）×44mm（宽）×40mm（厚），重量仅约 160 克（含四颗 1.5V 四号电池），携带十分方便，单手即可操作。

The Taiwan Beckles BK8621C hygrometer and thermometer is a portable and high-performance measuring instrument suitable for detecting temperature and humidity in various environments. It employs a high-precision Pt385/1000Ω RTD temperature sensor, with a temperature measurement range from -20℃ to 100℃ and a resolution of 0.1℃. In the commonly used temperature range of 0℃ to 50℃, the accuracy is ±0.5℃. For humidity measurement, it is equipped with a fast-responding capacitive humidity sensor, covering a range from 0% to 100% RH with a resolution of 0.1% RH. At 25℃ and within the 10% to 90% RH range, the accuracy is ±2.5%.

The device features a 3½-digit LCD display, and the backlight function ensures clear data reading even in dimly lit environments. Additionally, it has a readout and maximum value lock function, facilitating users in recording and comparing measurement results. The robust shock-resistant housing design allows it to adapt to various complex working environments. Moreover, it comes with a carrying case, enabling users to conduct measurements anytime and anywhere. The operating environment is from 0℃ to 50℃, and the storage environment is from -20℃ to 60℃, with 0 to 80% RH (after battery removal). The dimensions are 170mm (height) × 44mm (width) × 40mm (thickness), and the weight is only about 160 grams (including four 1.5V AA batteries), making it very portable and operable with one hand.