{"article":{"id":39148204480919,"url":"https://switchbot.zendesk.com/api/v2/help_center/en-us/articles/39148204480919.json","html_url":"https://support.switch-bot.com/hc/en-us/articles/39148204480919-How-Does-the-Window-Detect-Feature-of-SwitchBot-Smart-Radiator-Thermostat-Work","author_id":375553353294,"comments_disabled":false,"draft":false,"promoted":false,"position":0,"vote_sum":1,"vote_count":7,"upvote_count":4,"downvote_count":3,"section_id":34772885260311,"created_at":"2026-03-19T10:16:16Z","updated_at":"2026-10-20T12:21:04Z","name":"How Does the Window Detect Feature of SwitchBot Smart Radiator Thermostat Work?","title":"How Does the Window Detect Feature of SwitchBot Smart Radiator Thermostat Work?","source_locale":"en-us","locale":"en-us","outdated":false,"outdated_locales":[],"edited_at":"2026-03-23T07:08:18Z","user_segment_id":null,"permission_group_id":882873,"content_tag_ids":[],"label_names":[],"body":"<ul><li class=\"wysiwyg-list-bold\" data-list-item-id=\"e390a376516ec53e742371c4d913fa3ac\"><strong>Related Product: SwitchBot Smart Radiator Thermostat</strong></li></ul><p><span class=\"wysiwyg-font-size-large\">When enabled, the Window Detect function monitors for sudden temperature drops. If the temperature falls by more than 6°C (42.8°F) within 4 minutes, the device considers this a window-open event. It will display \"OP\" on the screen and close the valve automatically. This helps prevent energy waste when a window is left open.</span></p><p><span class=\"wysiwyg-font-size-large\">The device will exit this window-open state and return to normal temperature control once any of the following conditions are met:</span></p><ul>\n<li class=\"ck-list-marker-font-size-big\" data-list-item-id=\"e95acce4bdc3375514591d0e6e95ff6c6\"><span class=\"wysiwyg-font-size-large\">The temperature rises by 3°C (37.4°F) within 4 minutes</span></li>\n<li class=\"ck-list-marker-font-size-big\" data-list-item-id=\"e2a4064f3c9307f29fd01f571e84e3012\"><span class=\"wysiwyg-font-size-large\">The window-open state has lasted for more than 48 minutes</span></li>\n<li class=\"ck-list-marker-font-size-big\" data-list-item-id=\"e804cfe63a91b36a1a40b3ea91c639769\"><span class=\"wysiwyg-font-size-large\">The temperature source is switched</span></li>\n<li class=\"ck-list-marker-font-size-big\" data-list-item-id=\"ecac01723ff2d24a336b9bc15ccaeeb44\"><span class=\"wysiwyg-font-size-large\">The Window Detect function is turned off</span></li>\n</ul><p><span class=\"wysiwyg-font-size-large\"><strong>Important Note:</strong></span></p><ul>\n<li class=\"ck-list-marker-font-size-big\" data-list-item-id=\"e13b1e3a2a4f88135585d52d66cae0ebf\"><span class=\"wysiwyg-font-size-large\">For more precise window detection, we recommend using our Contact Sensor together with your Smart Radiator Thermostat in automations.</span></li>\n<li class=\"ck-list-marker-font-size-big\" data-list-item-id=\"e51f6026e5b9786b97c39ef2974162516\"><span class=\"wysiwyg-font-size-large\">If you have already set up automations involving the Contact Sensor and thermostat, we suggest disabling the built-in Window Detect function on the device itself. Running both simultaneously may result in conflicting commands.</span></li>\n<li class=\"ck-list-marker-font-size-big\" data-list-item-id=\"e80905fca5985bd351b34d656fe310a0f\"><span class=\"wysiwyg-font-size-large\">Automation features require a hub.</span></li>\n</ul>","user_segment_ids":[]}}