{"product_id":"sangamo-q557-2-24-hour-time-switch-2-on-off-cycles-with-day-omit","title":"Sangamo Q557.2 24-Hour Time Switch - 2 On\/Off Cycles with Day Omit","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Sangamo Q557.2 is a 24-hour programmable time switch with two independent on\/off cycles, a day omit dial and a manual override button. The unit controls mains circuits up to 20A, switching loads on and off at pre-set times across a 24-hour period without requiring daily reprogramming.\u003c\/p\u003e\n\u003cp\u003eDesigned for commercial heating, lighting, ventilation and pump control where regular switching patterns repeat daily, the Q557.2 suits applications like shop lighting schedules, office HVAC pre-heating, swimming pool filtration and underfloor heating circuits. The day omit dial allows specific days to be excluded from the programmed schedule — useful for skipping weekends or bank holidays without manual intervention.\u003c\/p\u003e\n\u003cp\u003eThe round dial face shows a 24-hour clock with red segment markers indicating the two programmable on periods. A quartz movement drives the clock mechanism, backed by a 100-hour battery reserve that maintains the programmed schedule through mains power interruptions without losing the set times. The manual override button provides temporary manual control without affecting the stored programme.\u003c\/p\u003e\n\u003cp\u003eThe unit measures 104mm wide × 83mm deep × 134mm high and mounts into a standard consumer unit enclosure or surface box. The 20A rating handles resistive loads including lighting circuits, immersion heaters and pump motors, with appropriate derating for inductive loads as per the manufacturer's guidance in the manual.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Net Weight (KG)\u003c\/td\u003e\n\u003ctd\u003e0.412\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Gross Weight (KG)\u003c\/td\u003e\n\u003ctd\u003e0.456\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Gross Weight (KG)\u003c\/td\u003e\n\u003ctd\u003e0.41\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Length (mm)\u003c\/td\u003e\n\u003ctd\u003e104\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Width (mm)\u003c\/td\u003e\n\u003ctd\u003e83\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Height (mm)\u003c\/td\u003e\n\u003ctd\u003e134\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Length (mm)\u003c\/td\u003e\n\u003ctd\u003e104\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width (mm)\u003c\/td\u003e\n\u003ctd\u003e83\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Height (mm)\u003c\/td\u003e\n\u003ctd\u003e134\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/products_Q557.2_datasheet.pdf\" target=\"_blank\"\u003eProduct Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/manual_RPTS_STANDARD.pdf\" target=\"_blank\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the day omit dial do?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe day omit dial allows you to exclude specific days of the week from the programmed switching schedule. Set the dial to omit Saturday and Sunday, for example, and the timer will not activate on weekends, resuming the normal schedule on Monday without manual reset.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the timer programmed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwo red segment markers on the 24-hour dial are positioned to mark the start and end times of each on period. The unit allows two separate on\/off cycles per 24-hour rotation. See the product manual for detailed programming instructions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens during a power cut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 100-hour battery reserve maintains the clock and stored programme through mains power interruptions. The timer resumes normal operation when mains power is restored, without needing to be reprogrammed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat load can it switch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Q557.2 is rated at 20A for resistive loads such as lighting circuits and immersion heaters. Inductive loads like motors and transformers require derating — consult the datasheet for specific load types and ratings.\u003c\/p\u003e","brand":"Sangamo","offers":[{"title":"Default Title","offer_id":45294050083083,"sku":"Q557.2","price":203.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/Q557.2_f7648206-088d-48e4-ab09-004897747f91.jpg?v=1714667624","url":"https:\/\/niori.co.uk\/products\/sangamo-q557-2-24-hour-time-switch-2-on-off-cycles-with-day-omit","provider":"Niori","version":"1.0","type":"link"}