{"product_id":"allied-air-switch-control-mm-1td-w-99-on-off-control-120v-w-10-min-delay-910535-001","title":"Allied Air Switch Control [MM-1TD-W-99] [On\/Off Control] [120V] [w\/10 Min Delay] (910535-001)","description":"\u003cdiv\u003e\n\u003ch1\u003eAllied\/Len Gordon MM-1TD-W-99 Air Switch Control (910535-001)\u003c\/h1\u003e\n\u003cp\u003eAllied Innovations’ MM-1TD-W-99 Air Switch Control is a 120V safety interface for tub pumps that prevents activation until water is at a safe level, and adds a 10-minute delay to minimize nuisance starts. Designed for fiberglass or cultured marble tubs, it integrates with Len Gordon MM series air switches or the ETD motor mount switch to protect both the pump and tub installation.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eModel \u0026amp; Compatibility\u003c\/b\u003e: MM-1TD-W-99; must be used with Len Gordon MM series air switch or the ETD motor mount switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eElectrical Ratings\u003c\/b\u003e: 120VAC, 1HP, 50\/60Hz, 2-wire plus ground; 16A maximum running load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTub Type \u0026amp; Fit\u003c\/b\u003e: Designed for fiberglass or cultured marble tubs with wall thickness up to 1\".\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSafety Feature\u003c\/b\u003e: Prevents pump activation unless water in the tub is above a predetermined safe level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDelay Function\u003c\/b\u003e: Built-in 10-minute delay to reduce startup cycling and protect the pump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIndoor Use\u003c\/b\u003e: Rated for indoor installations; suitable for residential bath setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDiscontinued Status\u003c\/b\u003e: Discontinued by the manufacturer; replacement recommended CAST-201-010-01-04C.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis control helps ensure a safer, more reliable pump operation by aligning pump activity with actual tub water conditions. The 10-minute delay provides an extra buffer against accidental starts during power fluctuations or temporary water level changes, while the water-level safety threshold guards against dry-running and potential damage. Although the MM-1TD-W-99 is discontinued, it remains a proven option for restoring or maintaining legacy spa and tub systems and can be substituted with CAST-201-010-01-04C for continued compatibility with MM series air switches.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAllied\/Len Gordon Air Switch Control [MM-1TD-W-99] [On\/Off Control] [120V] [w\/10 Min Delay] (910535-001)\u003cbr\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\" class=\"itemid\" id=\"_ctl0__ctl0_labelItemId\"\u003eDiscontinued by manufacturer\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv class=\"marginbottom\" id=\"_ctl0__ctl0_panelRegisteredContent\"\u003e\n\u003cdiv id=\"_ctl0__ctl0_panelManfInfo\"\u003e\n\u003cdiv class=\"item-ids\"\u003e\n\u003clabel\u003e\u003cspan id=\"_ctl0__ctl0_labelManfLabel\"\u003eManufacturer:\u003c\/span\u003e\u003c\/label\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan id=\"_ctl0__ctl0_labelManf\"\u003eLen Gordon\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"item-ids\"\u003e\n\u003clabel\u003e\u003cspan id=\"_ctl0__ctl0_labelManfNoLabel\"\u003eManufacturer #:\u003c\/span\u003e\u003c\/label\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan id=\"_ctl0__ctl0_labelManfNo\"\u003e910535-001\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eRecommended Replacement: \u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e\u003ca style=\"color: rgb(255, 42, 0);\" title=\"NuWhirl Touchstone CAST Air-Activated Control Water Pump (TF-1)\" href=\"https:\/\/bathparts.com\/products\/cast-201-01-01-04c\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eCAST-201-010-01-04C\u003c\/span\u003e\u003c\/a\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eDesigned for fiberglass or cultured marble tubs with a wall thickness of up to 1\". Prevents activation of pump unless water in tub is above a predetermined safe level. Must be used with the Len Gordon MM series air switch or the ETD motor mount switch.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Allied Innovations","offers":[{"title":"Default Title","offer_id":40241208918058,"sku":"910535-001","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/4014\/1354\/products\/58-439-2340_xl.jpg?v=1769976039","url":"https:\/\/bathparts.com\/products\/allied-air-switch-control-mm-1td-w-99-on-off-control-120v-w-10-min-delay-910535-001","provider":"Bath \u0026 Spa Superstore","version":"1.0","type":"link"}