The HQA667380B77K temperature resistant passive magnetic control switch for mining is applied in various domestic and equipment signal feedback in chemical water treatment systems, ash and slag removal systems, acid and alkali metering systems, condensate systems, and lime water systems in power, petroleum, chemical, metallurgical and other enterprises. It is an updated product of various stroke switches such as boiler soot blowing, ignition, air supply and extraction, exhaust, and electric doors, providing motion position monitoring display& nbsp; Performance characteristics of HQA667380B77K magnetic proximity switch for mining: (1) This product uses T-assembly technology to secondary assemble various micro components, with no magnetization, no wear, and anti fatigue contacts& nbsp; (2) The signal is a non-contact action with no mechanical faults. Immersive, double-layer fully sealed structure, no oxidation, moisture-proof, waterproof, acid and alkali resistant, with performance; (3) The contact is fully suffocating, powered by the power supply, with zero leakage current and residual voltage, which solves the problem of leakage current and voltage drop caused by proximity switches working in programmable, PLC, and CO systems; lquo; Signal drop; rquo; And& lquo; Misconception of sending messages; rquo; Waiting for questions& nbsp; (4) Feedback installation and debugging are simple, do not require labor, only need to move the position by hand, have a long service life, install in place at once, and do not require maintenance for life; (5) Equipped with built-in British threaded interfaces, it can be connected to various specifications of metal joint sleeves& nbsp; Various products from Shandong Zhuoxin Institute have a one-year warranty. Technical parameters: (1) Working voltage: 0-450V, contact capacity: ＜ 10A; (2) Residual voltage: 0V Leakage current: 0mA; (3) Contact resistance: 0Ω Insulation resistance:>300M&Omega& nbsp; (4) Output status: Two pairs of contacts, one normally open and one normally closed; (5) Circuit protection: polarity protection, circuit breaker protection, short circuit protection, surge absorption; (6) Temperature range: -35&hellip+ 200℃，：  (7) Shell material: SUS304/316 stainless steel material, resistant to acid and alkali corrosion, dust pollution, etc; Shandong Zhuoxin Machinery Co., Ltd. mainly sells in the East China region, South China region, Central China region, North China region, Northwest region, Southwest region, and Northeast region. Jiangsu Province: Nanjing Wuxi Changzhou Yangzhou Xuzhou Suzhou Lianyungang Salt City Huai'an Suqian Zhen Jiang Nantong Taizhou Changshu Sichuan Province: Chengdu Leshan Ya'an Guang'an Nanchong Zigong Luzhou Neijiang Yibin Guangyuan Dazhou Ziyang Mianyang Meishan Shandong Province: Jinan Weifang Zibo Weihai Zaozhuang Tai'an Linyi Dongying Jining Yantai Rizhao Dezhou Liaocheng Anhui Province: Hefei Wuhu Bozhou Ma'anshan Chizhou Huainan Huaibei Bengbu Chaohu Anqing Suzhou Xuancheng Chuzhou Lu'an Xinjiang: Urumqi Karamay Yining Kashi Kuitun Shihezi Hami Korle Changji Aksu Hotan Altai Tower City Turpan Bole Atushi Fukang Wusu: Hohhot Hulunbeier Baotou Chifeng Wuhai Tongliao Ordos Ulanqab Bayannur Shanxi Province: Taiyuan Datong Yangquan Changzhi Linfen Shanxi Jincheng Jincheng Xinzhou Shuozhou Luliang Hebei Province: Shijiazhuang Baoding Qinhuangdao Tangshan Handan Xingtai Cangzhou Chengde Langfang Hengshui Zhangjiakou Ningxia: Yinchuan Guyuan Qingtongxia Shizuishan Zhongwei Qinghai Province: Xining Gansu Province: Lanzhou Baiyin Wuwei Jinchang Pingliang Zhangye Jiayuguan Jiuquan Qingyang Dingxi Longnan Tianshui Shaanxi Province: Xi'an Xianyang Yulin Baoji Tongchuan Weinan Hanzhong Ankang Shangluo Yan'an Xizang: Lhasa Ali Yunnan Province: Kunming Yuxi Dali Qujing Zhaotong Baoshan Lijiang Lincang Guizhou Province: Guiyang Anshun Zunyi Liupanshui Guangxi Province: Nanning Hezhou Liuzhou Guilin Wuzhou Beihai Yulin Qinzhou Baise Fangchenggang Guigang Hechi Chongzuo Guests Hunan Province: Changsha Chenzhou Loudi Hengyang Zhuzhou Xiangtan Yueyang Changde Shaoyang Yiyang Yongzhou Zhangjiajie Huaihua Hubei Province: Jingmen Xianning Xiangfan Jingzhou Huangshi Yichang Suizhou Xiaogan Huanggang Shiyan Henan Province: Zhengzhou Luoyang Jiaozuo Shangqiu Xinyang Xinxiang Anyang Kaifeng Luohe Nanyang Hebi Pingdingshan Puyang Xuchang Zhoukou Sanmenxia Zhumadian Jiyuan Jiangxi Province: Nanchang Ganzhou Jingdezhen Jiujiang Pingxiang Xinyu Fuzhou Yichun Shangrao Yingtan Ji'an Heilongjiang Province: Yichun Mudanjiang Daqing Jixi Hegang Suihua Shuangyashan Qitai River Jiamusi Heihe Qihar Jilin Province: Tonghua Baicheng Siping Liaoyuan Songyuan Baishan Liaoning Province: Panjin Anshan Fushun Benxi Tieling Jinling Zhejiang Province: Hangzhou Shaoxing Wenzhou Huzhou Jiaxing Taizhou Jinhua Zhoushan Quzhou Lishui Guangdong Province: Jiangmen Foshan Zhanjiang Shaoguan Zhongshan Maoming Zhaoqing Yangjiang Huizhou Chaozhou Jieyang Qingyuan River Yuanshanwei Yunfu