以下是关于DT8899多功能环境表的中英文介绍：

DT8899多功能环境表是一款集多种功能于一体的高精度测量仪器。它将声级计、照度计、湿度仪、温度计和K型红外测温仪的功能相结合，能够满足不同场景下的测量需求。

在功能方面，该设备可测量K型温度，范围为-20℃～1370℃，分辨率为0.1℃，基本精度为±（1.0％＋1℃）；红外温度测量范围为-50℃～550℃，精度为±（2.0％＋2℃）；光度测量范围有20，200，2000，20000，精度为±（0.5％＋10d）；湿度测量范围为0％～100％RH，精度为±2.0％RH；声级测量范围为30dB～130dB，精度为±3.5dB；风速测量范围涵盖多种单位，如ft/min:80～4930，m/sec:0.3～45.0，Knots:0.6～88.0，Km/hr:1.0～140.0，MPH:0.9～56.0，精度为±（3.0％+2d）。

此外，DT8899还具备数据保持、最大值保持、低电量提示和自动关机等功能。其尺寸为200×75×50毫米，重量为280克，携带方便。配件包括9V电池、K型温度探头、湿度探头、光度探头、红外探头、工具盒、彩盒和叶轮。

The DT8899 multifunctional environment meter is a high-precision measuring instrument that integrates multiple functions. It combines the functions of a sound level meter, illuminance meter, hygrometer, thermometer, and K-type infrared thermometer, meeting the measurement needs of various scenarios.

In terms of functions, the device can measure K-type temperature with a range of -20℃ to 1370℃, a resolution of 0.1℃, and a basic accuracy of ±(1.0%+1℃). The infrared temperature measurement range is -50℃ to 550℃, with an accuracy of ±(2.0%+2℃). The illuminance measurement range includes 20, 200, 2000, 20000, with an accuracy of ±(0.5%+10d). The humidity measurement range is 0% to 100% RH, with an accuracy of ±2.0% RH. The sound level measurement range is 30dB to 130dB, with an accuracy of ±3.5dB. The wind speed measurement range covers various units, such as ft/min: 80 to 4930, m/sec: 0.3 to 45.0, Knots: 0.6 to 88.0, Km/hr: 1.0 to 140.0, MPH: 0.9 to 56.0, with an accuracy of ±(3.0%+2d).

In addition, the DT8899 also features data hold, maximum value hold, low battery indication, and automatic shutdown. It has dimensions of 200×75×50 mm and a weight of 280 grams, making it easy to carry. Accessories include a 9V battery, K-type temperature probe, humidity probe, illuminance probe, infrared probe, tool box, color box, and propeller.