[{"sku":"U23-004","title":"HOBO U23 Pro v2 External Temperature Data Logger","subtitle":null,"variant_product_name":null,"unit_price":"195.00","brands":["HOBO"],"region":null,"service_plans":[],"parcel_length":"5.00","parcel_width":"1.50","parcel_height":"5.50","parcel_weight":"0.30","sellable":true,"published":true,"product_page_url":"\/products\/data-loggers\/u23-004","nid":"12481","product_description":"<p>A weatherproof data logger with an external soil\/water temperature sensor on a 6-foot cable, for applications where just one temperature probe is required. Also includes an internal temperature sensor.<\/p><drupal-media data-entity-type=\"media\" data-entity-uuid=\"d645daa2-5227-4f95-a7fc-19778a0e3f8d\" data-align=\"center\">&nbsp;<\/drupal-media><drupal-media data-entity-type=\"media\" data-entity-uuid=\"7cc081ef-a7fb-46d8-a305-6e341b7d712a\" data-align=\"center\">&nbsp;<\/drupal-media>","applications":["Water Resource Management","Aquatic Ecology","Agricultural Monitoring","Agricultural Research"],"battery_replacement":"HP-B","brand":"HOBO","communication":"Optic\/USB","compatibility_callout":["HOBOware"],"compatible_items":{"Accessory":{"Compliance_Certificates":{"items":["COMPLIANCE CERT"]},"Data_Offload_Base_Stations_Shuttles_Couplers":{"items":["COUPLER2-E"]},"NIST_Setup_Certifications":{"items":["NIST-SETUP","NIST-TEMP-POINT"]},"Solar_Radiation_Shields":{"items":["RS3-B"]},"UV_Protection_Caps":{"items":["U23-CAP"]},"Accessories":{"items":["ME-BP"]}},"Maintenance":{"Batteries":{"items":["HP-B"]},"Desiccants":{"items":["DESICCANT1"]}},"Required Communications":{"Communications":{"items":["BASE-U-4"]},"Data_Offload_Base_Stations_Shuttles_Couplers":{"items":["U-DTW-1"]}},"Required Software":{"Graphing_Analysis":{"items":["BHW-PRO-DLD","BHW-PRO-USB"]}}},"compliance_marks":["Conformit\u00e9 Europ\u00e9ene (CE)"],"country":"US","customers_also_bought":["H21-USB","MX2304","RG3","U-DTW-1"],"field_documents":[{"nid":9481},{"nid":10376}],"environment":["Outdoor"],"important_information":"Requires HOBOware software and either an Optic USB Base Station or HOBO Waterproof Shuttle (U-DTW-1). HOBOware Pro is required when using the HOBO Waterproof Shuttle. See compatible items below.","logger_sensor_type":"external_sensors","measurement":["Soil Temperature ","Temperature "],"media_remote_videos":["https:\/\/www.youtube.com\/watch?v=-M6nMkFdoWQ"],"not_a_sku":"0","parcel_status":"default","product_battery":"onset_battery","product_family_series":"U23","features":"<ul>\n\t<li>Weatherproof housing for use in outdoor or condensing environments<\/li>\n\t<li>High accuracy<\/li>\n\t<li>Small-diameter external sensor versions for measurements in tight spaces<\/li>\n\t<li>Optic USB interface for fast and reliable download<\/li>\n\t<li>Compatible with HOBOware and HOBOware Pro software for logger setup, graphing, and analysis<\/li>\n<\/ul>","product_price":"195.00","specifications":[{"type":"Product Specifications","revision_default":"1","field_hide_in_compare":"0","field_hide_on_specs_tab":"0","field_specification_group_label":"Temperature Sensor","field_specification_items":[{"type":"Product Specifications - Item","revision_default":"1"},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Operation Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-001A internal sensor: -40 to 70\u00b0C (-40 to 158\u00b0F)"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-002A external temperature sensor: -40 to 70\u00b0C (-40 to 158\u00b0F)"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-003 and U23-004 external sensors: -40 to 100\u00b0C (-40 to 212\u00b0F), with tip and cable immersion in fresh water up to 50\u00b0C (122\u00b0F) for one year"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Accuracy","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-001A and U23-002A: \u00b10.25\u00b0C from -40 to 0\u00b0C (\u00b10.45 from -40 to 32\u00b0F), \u00b10.2\u00b0C from 0 to 70\u00b0C (\u00b10.36 from 32 to 158\u00b0F)"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-003 and U23-004: \u00b10.21\u00b0C from 0\u00b0 to 50\u00b0C (\u00b10.38\u00b0F from 32\u00b0 to 122\u00b0F); see Plot A"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Resolution","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-001A and U23-002A: 0.04\u00b0C (0.072\u00b0F)"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-003 and U23-004: 0.02\u00b0C at 25\u00b0C (0.04\u00b0F at 77\u00b0F); see Plot A"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Response Time (Typical to 90%)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-001A internal sensor: 10 minutes in air moving 1 m\/sec"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-002A external temperature sensor: 3 minutes, 45 seconds in air moving 1 m\/sec"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-003 and U23-004 external sensors: 3 minutes in air moving"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"1 m\/sec; 30 seconds in stirred water"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Drift","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-001A and U23-002A: <0.01\u00b0C (0.018\u00b0F) per year"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-003 and U23-004: <0.1\u00b0C (0.18\u00b0F) per year"}]}]},{"type":"Product Specifications","revision_default":"1","field_hide_in_compare":"0","field_hide_on_specs_tab":"0","field_specification_group_label":"Relative Humidity Sensor (U23-001A, U23-002A only)","field_specification_items":[{"type":"Product Specifications - Item","revision_default":"1"},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Operation Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"0 to 100% RH, -40\u00b0 to 70\u00b0C (-40\u00b0 to 158\u00b0F)"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Exposure to conditions below -20\u00b0C (-4\u00b0F) or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1%"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Accuracy","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"\u00b12.5% from 10% to 90% RH typical to a maximum of \u00b13.5% including hysteresis at 25\u00b0C (77\u00b0F); below 10% and above 90% \u00b15% typical"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Resolution","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"0.05%"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Response Time (Typical to 90%)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-001A: 40 minutes in air moving 1 m\/sec with protective cap"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-002A: 15 seconds in air moving 1 m\/sec"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Drift","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"<1% per year typical"}]}]},{"type":"Product Specifications","revision_default":"1","field_hide_in_compare":"0","field_hide_on_specs_tab":"0","field_specification_group_label":"Logger","field_specification_items":[{"type":"Product Specifications - Item","revision_default":"1"},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Operation Range","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_imperial_value":"-40\u00b0 to 158\u00b0F","field_spec_metric_value":"-40\u00b0 to 70\u00b0C "}]}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Real-time Clock","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_imperial_value":"32\u00b0 to 122\u00b0F","field_spec_metric_value":"\u00b11 minute per month 0\u00b0 to 50\u00b0C "}]}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Battery","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"1\/2 AA, 3.6 Volt lithium, user-replaceable (HP-B)"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Battery Life (Typical Use)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"3 years with 1 minute or greater logging interval"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Memory (Non-Volatile)","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"64K bytes memory (approx. 21,000 temperature and RH measurements)"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Materials","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"All models: ASA styrene polymer housing and mounting clamp; polypropylene protective cap; Buna-N o-ring(s); U23-001A,"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-002A only: ASA styrene polymer RH sensor cap; modified hydrophobic polyethersulfone membrane"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Cables","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-001A: No cables"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-002A: One 184 cm (6 ft) PVC cable; sensor diameter 1 cm (0.38 in.)"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-003: Two 184 cm (6 ft) PVC cables; sensor diameter 0.5 cm (0.20 in.)"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-004: One 184 cm (6 ft) PVC cable; sensor diameter 0.5 cm (0.20 in.)"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Environmental Rating","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Electronics housing is NEMA 6P equivalent (tolerant of brief submergence);"},{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Units with RH sensors are NEMA 4 equivalent (splash-resistant)"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Launch Modes","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Immediate start; delayed start"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Logging Interval","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hours"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Offload Modes","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Offload while logging; stop and offload"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Battery Indication","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile."}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Weight","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"U23-001A: 57 g (1.5 oz); U23-002A: 118 g (3.1 oz); U23-003: 138 g (3.7 oz); U23-004: 102 g (2.7 oz)"}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"Dimensions","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_measurement":[{"type":"Product Specification - Measurement","revision_default":"1","field_spec_imperial_value":"4.0 \u00c3\u0097 1.5 in.","field_spec_metric_value":"Housing measures 10.2 \u00d7 3.8 cm "}]}]},{"type":"Product Specifications - Item","revision_default":"1","field_specification_label":"NIST Certificate","field_specification_values":[{"type":"Product Specification - Value","revision_default":"1","field_specification_value":"Temperature certificate available for additional charge"}]}]}],"product_status":"active","product_type":"Data Loggers","solution":["Stand-alone Data Loggers ","Weatherproof Stand-alone Data Loggers "],"status_description":"[custom-onset:insert-block:5716]","warranty":"0","whats_in_the_box":["HOBO U23-004 Pro v2 External Temp Data Logger","Clamp and mounting screws","UV protective cap"],"wireless":"non_wireless","digital_item":"0"},[{"nid":"9481","uuid":"ba0339bd-cb13-4777-b276-0c88173d9040","vid":"10326","langcode":"und","revision_timestamp":"1645725751","status":"1","title":"HOBO Pro v2 Data Logger (U23-00x) User's Manual","created":"1379679105","changed":"1645725751","promote":"0","sticky":"0","default_langcode":"1","revision_default":"1","revision_translation_affected":"1","path":{"alias":"\/resources\/documentation\/10694-man-u23","pid":"18396","langcode":"und"},"archive_resource":"0","associated_products":["U23-001","U23-001A","U23-002","U23-002A","U23-003","U23-004"],"brand":"HOBO","documentation_files":{"English":"https:\/\/dev-d9.onsetcomp.com\/sites\/default\/files\/resources-documents\/10694-Q%20U23%20Manual.pdf","German":"https:\/\/dev-d9.onsetcomp.com\/sites\/default\/files\/resources-documents\/18478-F%20U23%20Manual%20German.pdf"},"documentation_id":"10694-MAN-U23","documentation_is_datasheet":"0","resource_type":"Documentation"},{"nid":"10376","uuid":"7ce44c87-f783-4f5d-9773-d53ce2c42dc5","vid":"11221","langcode":"und","revision_timestamp":"1645725702","status":"1","title":"HOBO\u00ae Pro v2 Logger (U23-00x) Quick Start","created":"1520624718","changed":"1645725702","promote":"0","sticky":"0","default_langcode":"1","revision_default":"1","revision_translation_affected":"1","path":{"alias":"\/resources\/documentation\/22138-man-u23-qsg","pid":"21001","langcode":"und"},"archive_resource":"0","associated_products":["U23-001","U23-001A","U23-002","U23-002A","U23-003","U23-004"],"brand":"HOBO","documentation_files":{"English":"https:\/\/dev-d9.onsetcomp.com\/sites\/default\/files\/2023-03\/22138-D%20MAN-U23-QSG-web.pdf"},"documentation_id":"22138-MAN-U23-QSG","documentation_is_datasheet":"0","documentation_short_title":"U23-00x Quick Start Guide","resource_type":"Documentation"}]]