This document introduces the usage instructions and technical parameters of the NWSF-1AT temperature and humidity transmitter produced by Beijing Kunlun Coast Sensing Technology Co., Ltd. The transmitter is a sensing and transmitting integrated design, suitable for temperature and humidity measurement in HVAC indoor environments. It features DC 24V power supply, 0% RH to 100% RH humidity range, 0โ to 50โ temperature range, and high accuracy.