{"nid":"4451","uuid":"f121c0c9-7389-436b-99b8-50aef1c52123","vid":"5296","langcode":"und","revision_timestamp":"1656615135","status":"1","title":"Wiring Diagram - Monitoring a DC Voltage Change with the HOBO UX120-017 and HOBO UX90-001","created":"1479220976","changed":"1692131367","promote":"0","sticky":"0","default_langcode":"1","revision_default":"1","revision_translation_affected":"1","path":{"alias":"\/resources\/tech-notes\/wiring-diagram-monitoring-dc-voltage-change-the-hobo-ux120-017-and-hobo-ux90","pid":"9606","langcode":"und"},"body":"<p>Attached is a drawing that shows how to monitor a DC voltage change with the HOBO UX120-017 and the HOBO UX90-001.<\/p>\r\n\r\n<p>Note that the DC voltage must go below 0.4VDC to be detected as a low state. It will be <span style=\"font-size: 10pt; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">necessary<\/span> to add a pull down resistor across the input if measuring a direct voltage to insure the input returns to low state. <\/p>\r\n\r\n<p>Helpful Links:<\/p>\r\n\r\n<p><a href=\"\/products\/data-loggers\/ux120-017\">UX120-017<\/a><\/p>\r\n\r\n<p><a href=\"\/products\/data-loggers\/ux120-017m\">UX120-017M<\/a><\/p>\r\n\r\n<p><a href=\"\/products\/data-loggers\/ux90-001\">UX90-001<\/a><\/p>\r\n\r\n<p><a href=\"\/products\/data-loggers\/ux90-001m\">UX90-001M<\/a><\/p>","applications":["Building Performance"],"associated_products":["UX120-017","UX120-017M","UX90-001","UX90-001M-RETIRED"],"brand":"HOBO","documentation_hoboconnect":"0","documentation_intemp_app":"0","documentation_is_datasheet":"0","files":{"download_file":"https:\/\/dev-d9.onsetcomp.com\/sites\/default\/files\/resources-documents\/State_DC_Voltage_UX90-001_UX120-017.pdf"},"FIELDS":[["field_download_file","entity_reference","document"]],"meta_tags":"a:1:{s:6:\"robots\";s:7:\"noindex\";}","resource_topic":["Getting Started","Troubleshooting & Maintenance"],"resource_type":"Tech Note","tech_note_audience":["External"],"tech_note_type":["Hardware Training"]}