The NTC thermistors in Fire alarm This is kristy wong from the Nanjing Shiheng Electronic., Co, Ltd. We are the manufature of NTC thersmitors, NTC temperature sensors, Varistors and other electric components. Our products could be used in medical instruments, automobile, home applicance for temperature control, temp compensation, surge current and so on. The picture shows the application in the pcba of Fire alarm for temperature detection. Learn more at www.ntcshiheng.com Wechat/Whatsapp:+8613951639167 Email:1372286431@qq.com kristywong521@gmail.com