{"id":3773,"date":"2025-06-16T09:44:51","date_gmt":"2025-06-16T01:44:51","guid":{"rendered":"https:\/\/www.key-iot.com\/?p=3773"},"modified":"2025-06-16T09:48:49","modified_gmt":"2025-06-16T01:48:49","slug":"industrial-4g-router-with-sim-card-slot-recommended","status":"publish","type":"post","link":"https:\/\/www.key-iot.com\/zh\/blog\/industrial-4g-router-with-sim-card-slot-recommended\/","title":{"rendered":"\u5efa\u8bae\u4f7f\u7528\u5e26 SIM \u5361\u63d2\u69fd\u7684\u5de5\u4e1a 4G \u8def\u7531\u5668"},"content":{"rendered":"<div translate=\"no\">\n<p><img decoding=\"async\" class=\"wp-image-3774 size-full aligncenter\" title=\"\u5e26 SIM \u5361\u63d2\u69fd\u7684\u5de5\u4e1a 4G \u8def\u7531\u5668\" src=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/b251f57e035e10fe4595777acfc1e385.png\" alt=\"\u5e26 SIM \u5361\u63d2\u69fd\u7684\u5de5\u4e1a 4G \u8def\u7531\u5668\" width=\"658\" height=\"526\" 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translate=\"no\">\u53ef\u6269\u5c55\u5185\u5b58\uff1a64MB RAM + 16MB FLASH\uff08\u53ef\u6269\u5c55\u81f3 32MB\uff09\uff0c\u7528\u4e8e\u7269\u8054\u7f51\u8fb9\u7f18\u8ba1\u7b97<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<hr \/>\n<h2><\/h2>\n<h2>2.\u53cc SIM \u5361\u7684\u4f18\u52bf\uff1a\u5728\u5de5\u4e1a\u7269\u8054\u7f51\u4e2d\u7684\u91cd\u8981\u6027<\/h2>\n<\/div>\n<div translate=\"no\">\n<h3>\u2460 \u96f6\u505c\u673a\u64cd\u4f5c<\/h3>\n<ul>\n<li translate=\"yes\">\u81ea\u52a8\u6545\u969c\u5207\u6362\uff1a\u68c0\u6d4b\u5230\u7f51\u7edc\u4e2d\u65ad\u65f6\uff0c\u7acb\u5373\u5207\u6362\u5230\u8f85\u52a9 SIM \u5361\u3002<\/li>\n<li translate=\"no\">\u8fd0\u8425\u5546\u7075\u6d3b\u6027\uff1a\u5c06\u4e00\u7ea7\u8fd0\u8425\u5546\uff08\u5982 Verizon\u3001\u6c83\u8fbe\u4e30\uff09\u4e0e\u5730\u533a\u63d0\u4f9b\u5546\u7ed3\u5408\u8d77\u6765\uff0c\u5b9e\u73b0\u6700\u4f73\u8986\u76d6\u3002<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<h3>\u6210\u672c\u4f18\u5316<\/h3>\n<ul>\n<li translate=\"yes\">\u6d41\u91cf\u5206\u6d41\uff1a\u901a\u8fc7\u9ad8\u901f\u7f51\u7edc\u4f18\u5148\u5904\u7406\u9ad8\u4f18\u5148\u7ea7\u6570\u636e\uff08\u5982\u4f20\u611f\u5668\u8b66\u62a5\uff09\uff0c\u540c\u65f6\u901a\u8fc7\u9884\u7b97\u8ba1\u5212\u8def\u7531\u975e\u5173\u952e\u6570\u636e\uff08\u65e5\u5fd7\uff09\u3002<\/li>\n<li translate=\"no\">eSIM \u9762\u5411\u672a\u6765\uff1a\u901a\u8fc7\u8fdc\u7a0b\u8fd0\u8425\u5546\u914d\u7f6e\uff0c\u6d88\u9664\u7269\u7406 SIM \u5361\u4ea4\u6362\u3002<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<h3>\u7b80\u5316\u5168\u7403\u90e8\u7f72<\/h3>\n<ul>\n<li translate=\"no\">\u652f\u6301 7 \u6a21\u5168\u9891\uff1a\u517c\u5bb9 LTE-FDD (B1\/B3\/B5\/B7\/B8\/B20\/B28) \u548c LTE-TDD (B38\/B40\/B41)\uff0c\u786e\u4fdd\u5168\u7403 4G \u517c\u5bb9\u6027\u3002<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<hr \/>\n<h2><img decoding=\"async\" class=\"size-full wp-image-3777 aligncenter\" title=\"7cd4d3efa922befbb892f2895209d6b3\" src=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/7cd4d3efa922befbb892f2895209d6b3.png\" alt=\"7cd4d3efa922befbb892f2895209d6b3\" width=\"849\" height=\"690\" srcset=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/7cd4d3efa922befbb892f2895209d6b3.png 849w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/7cd4d3efa922befbb892f2895209d6b3-300x244.png 300w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/7cd4d3efa922befbb892f2895209d6b3-768x624.png 768w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/7cd4d3efa922befbb892f2895209d6b3-600x488.png 600w\" sizes=\"(max-width: 849px) 100vw, 849px\" \/><\/h2>\n<h2>3.\u6280\u672f\u89c4\u683c<\/h2>\n<\/div>\n<div translate=\"no\">\n<h3>\u786c\u4ef6\u67b6\u6784<\/h3>\n<div>\n<div><img decoding=\"async\" class=\"wp-image-3782 aligncenter\" title=\"ec30a8a631c61d3d8aec94260f992936\" src=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/ec30a8a631c61d3d8aec94260f992936.png\" alt=\"ec30a8a631c61d3d8aec94260f992936\" width=\"834\" height=\"452\" srcset=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/ec30a8a631c61d3d8aec94260f992936.png 631w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/ec30a8a631c61d3d8aec94260f992936-300x163.png 300w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/ec30a8a631c61d3d8aec94260f992936-600x325.png 600w\" sizes=\"(max-width: 834px) 100vw, 834px\" \/><\/div>\n<\/div>\n<\/div>\n<div translate=\"no\">\n<h3>\u8f6f\u4ef6\u529f\u80fd<\/h3>\n<ul>\n<li translate=\"yes\">VPN \u5b89\u5168\uff1aIPSEC\/OPENVPN\/L2TP \u96a7\u9053\uff0c\u7528\u4e8e\u52a0\u5bc6 SCADA\/PLC \u901a\u4fe1\u3002<\/li>\n<li translate=\"yes\">\u4e91\u7ba1\u7406\uff1a\u901a\u8fc7 KEY-IoT \u5e73\u53f0\u76d1\u63a7 1000 \u591a\u53f0\u8def\u7531\u5668\uff0c\u5b9e\u73b0\u8fdc\u7a0b\u56fa\u4ef6\u66f4\u65b0\u548c\u5b9e\u65f6\u8bca\u65ad\u3002<\/li>\n<li translate=\"no\">\u8fb9\u7f18\u8ba1\u7b97\uff1aOpenWrt \u4e0a\u7684\u5b9a\u5236 Lua\/Python \u811a\u672c\uff0c\u7528\u4e8e\u672c\u5730\u5316\u6570\u636e\u5904\u7406\u3002<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<hr \/>\n<h2>4.\u5e94\u7528\u573a\u666f<\/h2>\n<\/div>\n<div translate=\"no\">\n<h3>\u2460 \u8fdc\u7a0b\u9065\u6d4b\u8bbe\u5907 (RTU)<\/h3>\n<ul>\n<li translate=\"no\">\u5728\u77f3\u6cb9\/\u5929\u7136\u6c14\u7ba1\u9053\u4e2d\u90e8\u7f72\u53cc SIM \u5361\uff0c\u786e\u4fdd\u5168\u5929\u5019\u538b\u529b\/\u6e29\u5ea6\u6570\u636e\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<h3>\u79fb\u52a8\u76d1\u63a7\u7cfb\u7edf<\/h3>\n<ul>\n<li translate=\"no\">\u5728\u65e0\u6cd5\u4f7f\u7528 Wi-Fi \u65f6\uff0c\u4f7f\u7528 LTE \u540e\u5907\u7f51\u7edc\u4e3a\u5efa\u7b51\u5de5\u5730\u4e0a\u7684\u95ed\u8def\u7535\u89c6\u6444\u50cf\u673a\u4f9b\u7535\u3002<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<h3>\u8f66\u961f\u7ba1\u7406<\/h3>\n<ul>\n<li translate=\"no\">\u901a\u8fc7\u53cc\u7f51\u7edc\u8d1f\u8f7d\u5e73\u8861\u8ddf\u8e2a\u51b7\u85cf\u5361\u8f66\uff0c\u4fdd\u6301\u51b7\u94fe\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<h3>\u519c\u4e1a\u81ea\u52a8\u5316<\/h3>\n<ul>\n<li translate=\"no\">\u5229\u7528\u591a\u8f7d\u6ce2\u5197\u4f59\u8fde\u63a5\u519c\u6751\u519c\u573a\u7684\u571f\u58e4\u4f20\u611f\u5668\uff0c\u63d0\u9ad8\u5b63\u98ce\u6062\u590d\u80fd\u529b\u3002<\/li>\n<\/ul>\n<\/div>\n<div translate=\"no\">\n<hr \/>\n<h2><img decoding=\"async\" class=\"size-full wp-image-3776 aligncenter\" title=\"3e4d0f56452c1ef607a4ef932d542d94\" src=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/3e4d0f56452c1ef607a4ef932d542d94.png\" alt=\"3e4d0f56452c1ef607a4ef932d542d94\" width=\"834\" height=\"636\" srcset=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/3e4d0f56452c1ef607a4ef932d542d94.png 834w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/3e4d0f56452c1ef607a4ef932d542d94-300x229.png 300w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/3e4d0f56452c1ef607a4ef932d542d94-768x586.png 768w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/3e4d0f56452c1ef607a4ef932d542d94-600x458.png 600w\" sizes=\"(max-width: 834px) 100vw, 834px\" \/><\/h2>\n<h2>5.\u7ade\u4e89\u6bd4\u8f83<\/h2>\n<\/div>\n<div translate=\"no\">\n<div><img decoding=\"async\" class=\"wp-image-3781 aligncenter\" title=\"6a9378354ed50fa9ec4a4807ee4b0398\" src=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/6a9378354ed50fa9ec4a4807ee4b0398.png\" alt=\"6a9378354ed50fa9ec4a4807ee4b0398\" width=\"947\" height=\"344\" srcset=\"https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/6a9378354ed50fa9ec4a4807ee4b0398.png 688w, https:\/\/www.key-iot.com\/wp-content\/uploads\/2025\/06\/6a9378354ed50fa9ec4a4807ee4b0398-300x109.png 300w, 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The\u00a0SR520 Industrial 4G Router with SIM Card Slot \u00a0redefines connectivity standards with its\u00a0dual SIM card slots, industrial-grade ruggedness, and multi-network redundancy. Whether deploying smart factories, remote energy stations, or mobile surveillance systems, this router ensures uninterrupted data flow in the most challenging conditions. 1. 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