{"id":5947,"date":"2021-06-09T09:22:38","date_gmt":"2021-06-09T01:22:38","guid":{"rendered":"https:\/\/hongtronics.com\/?post_type=product&#038;p=5947"},"modified":"2025-06-02T14:43:36","modified_gmt":"2025-06-02T06:43:36","slug":"iot-wireless-temperature-relative-humidity-co2-and-atmospheric-pressure-datalogger-with-built-in-gsm-modem-u4440m","status":"publish","type":"product","link":"https:\/\/hongtronics.com\/en\/product\/iot-wireless-temperature-relative-humidity-co2-and-atmospheric-pressure-datalogger-with-built-in-gsm-modem-u4440m\/","title":{"rendered":"Internet of Things Wireless Temperature, Humidity, Carbon Dioxide and Atmospheric Pressure Recorder (U4440M)"},"content":{"rendered":"<h2>summarize<\/h2>\n<p><span>GSM \u6578\u64da\u8a18\u9304\u5668\u65e8\u5728\u8a18\u9304\u6eab\u5ea6\u3001\u6fd5\u5ea6\u3001\u5927\u6c23\u58d3\u529b\u548c CO2\u3002\u5982\u679c\u8d85\u51fa\u8a2d\u7f6e\u7684\u9650\u5236\uff0c\u53ef\u4ee5\u901a\u904e GPRS \u6578\u64da\u9023\u63a5\u767c\u9001 SMS \u548c JSON \u6d88\u606f\u3002\u6e2c\u91cf\u503c\u53ef\u4ee5\u767c\u9001\u5230\u4e92\u806f\u7db2\u5b58\u5132<\/span><span class=\"tlid-translation translation\" lang=\"en\"><span title=\"\"><span>COMET Cloud<\/span><span>\uff0c\u9019\u662f\u4e00\u500b\u5b8c\u6574\u7684\u76e3\u63a7\u3001\u5831\u8b66\u548c\u5206\u6790\u7cfb\u7d71<\/span><\/span><\/span><span>\u3002<\/span><\/p>\n<p><span>\u4e5f\u53ef\u4ee5\u8a2d\u7f6e\u5b9a\u6642\u767c\u9001JSON\u6d88\u606f\u5230COMET\u6578\u64da\u5eab\uff0c\u767c\u9001\u9593\u9694\u53ef\u8abf\u3002\u8b66\u5831\u4e5f\u7531 LED\u3001LCD \u672c\u5730\u6307\u793a\uff0c\u4e26\u7531\u5167\u7f6e\u8702\u9cf4\u5668\u767c\u51fa\u8072\u97f3\u6307\u793a\u3002<\/span><br \/>\n<span>\u8a18\u9304\u5728\u975e\u6613\u5931\u6027\u96fb\u5b50\u5b58\u5132\u5668\u4e2d\u9032\u884c\u3002\u6578\u64da\u53ef\u4ee5\u901a\u904e\u96a8\u9644\u7684 USB-C \u96fb\u7e9c\u50b3\u8f38\u5230 PC\u3002<\/span><\/p>\n<p><span>GSM \u8a18\u9304\u5100<\/span><strong><span>Includes traceable calibration certificate<\/span><\/strong><span>\uff0c<strong>\u5176\u4e2d\u6a19<\/strong>\u6709\u57fa\u65bc<strong>EN ISO\/IEC 17025 \u6a19\u6e96<\/strong>\u8981\u6c42\u7684\u6a19\u6e96\u5177\u8a08\u91cf\u53ef\u8ffd\u6eaf\u6027\u8072\u660e<\/span><strong><span>\u3002<\/span><\/strong><\/p>\n<p>&nbsp;<\/p>\n<h2>Applications<\/h2>\n<ul>\n<li>Industrial Environment<\/li>\n<li>Construction Management<\/li>\n<li>\u91ab\u7642\u4fdd\u5065<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Technical Specifications<\/h2>\n<p class=\"product-detail__properties-panel__title\">Temperature Sensor<\/p>\n<table width=\"1245\">\n<tbody>\n<tr>\n<td style=\"font-weight: 400;\" width=\"431\">Measurement Range<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">\u00a0-20 to +60 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">accurate<\/td>\n<td style=\"font-weight: 400;\">\u00b10.4 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">resolution (of a photo)<\/td>\n<td style=\"font-weight: 400;\">0.1 \u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u6fd5\u5ea6\u50b3\u611f\u5668<\/p>\n<table width=\"1245\">\n<tbody>\n<tr>\n<td width=\"431\">Measurement Range<\/td>\n<td width=\"814\">\u00a00 \u81f3 100 % RH<\/td>\n<\/tr>\n<tr>\n<td>accurate<\/td>\n<td>\u00b1 1.8 % RH<\/td>\n<\/tr>\n<tr>\n<td>resolution (of a photo)<\/td>\n<td>0.1% RH<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u9732\u9ede<\/p>\n<table width=\"1245\">\n<tbody>\n<tr>\n<td width=\"431\">Measurement Range<\/td>\n<td width=\"814\">\u00a0-90 \u81f3 +60 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>accurate<\/td>\n<td>\u00b11.5 \u00b0C\uff0c\u74b0\u5883\u6eab\u5ea6 T &lt;25 \u00b0C \u548c RH &gt;30 %<\/td>\n<\/tr>\n<tr>\n<td>resolution (of a photo)<\/td>\n<td>0.1\u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p class=\"product-detail__properties-panel__title\"><span>CO\u00a0<\/span><sub><span>2<\/span><\/sub><span>Sensor<\/span><\/p>\n<table width=\"1245\">\n<tbody>\n<tr>\n<td width=\"431\">Measurement Range<\/td>\n<td width=\"814\">0\u81f35000 ppm<\/td>\n<\/tr>\n<tr>\n<td>accurate<\/td>\n<td>25\u00b0C \u548c 1013hPa \u6642\u7684\u7cbe\u5ea6\u00b1\uff0850ppm +3% \u8b80\u6578\uff09<\/td>\n<\/tr>\n<tr>\n<td>resolution (of a photo)<\/td>\n<td>1 ppm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p class=\"product-detail__properties-panel__title\"><span>\u5927\u6c23\u58d3\u529b\u50b3\u611f\u5668\u50b3\u611f\u5668<\/span><\/p>\n<table width=\"1245\">\n<tbody>\n<tr>\n<td width=\"431\">Measurement Range<\/td>\n<td width=\"814\">600 \u81f3 1100 hPa<\/td>\n<\/tr>\n<tr>\n<td>accurate<\/td>\n<td>\u00b11.3 hPa at 23 \u00b0C \u5f9e 800 \u5230 1100 hPa<\/td>\n<\/tr>\n<tr>\n<td>resolution (of a photo)<\/td>\n<td>0.1 hPa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>General Technical Data<\/p>\n<table width=\"1245\">\n<tbody>\n<tr>\n<td style=\"font-weight: 400;\" width=\"431\">Working Temperature<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">-20 to +60 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">conduit<\/td>\n<td style=\"font-weight: 400;\"><span>\u5167\u90e8\u6eab\u5ea6\u3001\u6fd5\u5ea6\u3001CO\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u548c\u5927\u6c23\u58d3\u529b\u50b3\u611f\u5668<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Memory<\/td>\n<td style=\"font-weight: 400;\"><span class=\"product-detail__properties-panel__value\">In non-cyclic recording mode<\/span><span class=\"product-detail__properties-panel__name\">Storage<\/span><span class=\"product-detail__properties-panel__value\">500,000 values; 350,000 values in cyclic recording mode<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Record interval<\/td>\n<td style=\"font-weight: 400;\">Adjustable from 1 second to 24 hours<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Display and Alarm Refresh<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">Adjustable 1 s, 10 s, 1 min<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Recording Mode<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">Non-Cycling - data records stop cycling after filling memory - oldest data is overwritten by new data after filling memory<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Real Time Clock<\/td>\n<td style=\"font-weight: 400;\">Year, leap year, month, day, hour, minute, second.<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Battery<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">\u96fb\u6c60 SONY LiIon 5200mAh<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Protection Level<\/td>\n<td style=\"font-weight: 400;\">IP20<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">sizes<\/td>\n<td style=\"font-weight: 400;\">61 x 93 x 53 \u6beb\u7c73\uff0c\u5e36\u5929\u7dda 120 x 93 x 53 \u6beb\u7c73<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Weight (with battery)<\/td>\n<td style=\"font-weight: 400;\">\u7d04250 \u514b<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">promise to keep sth. in good repair<\/td>\n<td style=\"font-weight: 400;\">3 years<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><\/h2>\n<h2>Additional Products<\/h2>\n<ul class=\"product-detail__top-aside__menu mb-40\">\n<li class=\"product-detail__top-aside__menu-item\"><span><span>U4440M<\/span><\/span><\/li>\n<li class=\"product-detail__top-aside__menu-item\"><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.cometsystem.com\/userfiles\/dokumenty_menu\/54\/ie-lgr-uxxxxm-17.pdf\">Instruction manual<\/a><\/span><\/li>\n<li class=\"product-detail__top-aside__menu-item\"><span><span>Traceable calibration certificates<\/span><\/span><\/li>\n<li class=\"product-detail__top-aside__menu-item\"><span><span>\u53ef\u5145\u96fb\u96fb\u6c60<\/span><\/span><\/li>\n<li class=\"product-detail__top-aside__menu-item\"><span><span>Power Supply<\/span><\/span><\/li>\n<li class=\"product-detail__top-aside__menu-item\"><span><span>USB-C \u96fb\u7e9c<\/span><\/span><\/li>\n<li class=\"product-detail__top-aside__menu-item\"><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.cometsystem.com\/products\/comet-vision-analytical-software-for-dataloggers-and-multiloggers\/reg-cv\">Free Analysis Software COMET Vision<\/a><\/span><\/li>\n<li class=\"product-detail__top-aside__menu-item\"><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.cometsystem.com\/products\/comet-cloud\/reg-cloud\">COMET Cloud 3 \u500b\u6708<\/a><\/span><\/li>\n<\/ul>\n<p>\u203b<span>SIM \u5361\u4e0d\u5305\u62ec\u5728\u4ea4\u4ed8\u7bc4\u570d\u5167<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>GSM \u6578\u64da\u8a18\u9304\u5668\u65e8\u5728\u8a18\u9304\u6eab\u5ea6\u3001\u6fd5\u5ea6\u3001\u5927\u6c23\u58d3\u529b\u548c CO2\u3002\u5982\u679c\u8d85\u51fa\u8a2d\u7f6e\u7684\u9650\u5236\uff0c\u53ef\u4ee5\u901a\u904e GPRS \u6578\u64da\u9023\u63a5\u767c\u9001 SMS \u548c JSON \u6d88\u606f\u3002\u6e2c\u91cf\u503c\u53ef\u4ee5\u767c\u9001\u5230\u4e92\u806f\u7db2\u5b58\u5132<span class=\"tlid-translation translation\" lang=\"en\"><span title=\"\">COMET Cloud\uff0c\u9019\u662f\u4e00\u500b\u5b8c\u6574\u7684\u76e3\u63a7\u3001\u5831\u8b66\u548c\u5206\u6790\u7cfb\u7d71<\/span><\/span>\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>Applications<\/p>\n<ul>\n<li>Industrial Environment<\/li>\n<li>Construction Management<\/li>\n<li>\u91ab\u7642\u4fdd\u5065<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>General Technical Data<\/p>\n<table width=\"1245\">\n<tbody>\n<tr>\n<td style=\"font-weight: 400;\" width=\"431\">Working Temperature<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">-20 to +60 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">conduit<\/td>\n<td style=\"font-weight: 400;\"><span>\u5167\u90e8\u6eab\u5ea6\u3001\u6fd5\u5ea6\u3001CO\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u548c\u5927\u6c23\u58d3\u529b\u50b3\u611f\u5668<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Memory<\/td>\n<td style=\"font-weight: 400;\"><span class=\"product-detail__properties-panel__value\">In non-cyclic recording mode<\/span><span class=\"product-detail__properties-panel__name\">Storage<\/span><span class=\"product-detail__properties-panel__value\">500,000 values; 350,000 values in cyclic recording mode<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Record interval<\/td>\n<td style=\"font-weight: 400;\">Adjustable from 1 second to 24 hours<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Display and Alarm Refresh<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">Adjustable 1 s, 10 s, 1 min<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Recording Mode<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">Non-Cycling - data records stop cycling after filling memory - oldest data is overwritten by new data after filling memory<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Real Time Clock<\/td>\n<td style=\"font-weight: 400;\">Year, leap year, month, day, hour, minute, second.<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Battery<\/td>\n<td style=\"font-weight: 400;\" width=\"814\">\u96fb\u6c60 SONY LiIon 5200mAh<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Protection Level<\/td>\n<td style=\"font-weight: 400;\">\u00a0<span class=\"product-detail__properties-panel__value\">IP20<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">sizes<\/td>\n<td style=\"font-weight: 400;\">61 x 93 x 53 \u6beb\u7c73\uff0c\u5e36\u5929\u7dda 120 x 93 x 53 \u6beb\u7c73<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">Weight (with battery)<\/td>\n<td style=\"font-weight: 400;\">\u7d04250 \u514b<\/td>\n<\/tr>\n<tr>\n<td style=\"font-weight: 400;\">promise to keep sth. in good repair<\/td>\n<td style=\"font-weight: 400;\">3 years<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"featured_media":5946,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_eb_attr":"","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","iawp_total_views":7},"product_brand":[],"product_cat":[4202,406],"product_tag":[704],"class_list":["post-5947","product","type-product","status-publish","has-post-thumbnail","product_cat-wireless-temperature-humidity-recorder","product_cat-environmental-monitoring","product_tag-704","entry","has-media","first","instock","shipping-taxable","product-type-simple","has-product-nav","col","span_1_of_4","owp-content-center","owp-thumbs-layout-horizontal","owp-btn-normal","owp-tabs-layout-horizontal"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u6982\u8ff0 GSM \u6578\u64da\u8a18\u9304\u5668\u65e8\u5728\u8a18\u9304\u6eab\u5ea6\u3001\u6fd5\u5ea6\u3001\u5927\u6c23\u58d3\u529b\u548c CO2\u3002\u5982\u679c\u8d85\u51fa\u8a2d\u7f6e\u7684\u9650\u5236\uff0c\u53ef\u4ee5\u901a\u904e GPRS \u6578\u64da\u9023 | \u5b8f\u8679\u96fb\u5b50\u79d1\u6280\u6709\u9650\u516c\u53f8\" \/>\n\t<meta name=\"robots\" content=\"max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n\t<meta name=\"google-site-verification\" content=\"SkpHtpSLB2vAUMP2DE82RvjkPkzsxboRb7ir9XnuNmQ\" \/>\n\t<meta name=\"msvalidate.01\" content=\"75F9DB4D5EFA19B04308C9BEC35BA06B\" \/>\n\t<meta name=\"p:domain_verify\" content=\"9b5f6acf70cc242e0a343b56495c9000\" \/>\n\t<meta name=\"keywords\" 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