{"product_id":"d-h-12-carwash-controller-15-amp-77715","title":"IC D\/H-12 Carwash Controller 30 Amp 77715 (Dilling Harris eq.) (NEW)","description":"\u003cp\u003eThe DH-12 carwash controller is equivalent to the Dilling-Harris D\/H-12 , P\/N 77715 with many enhanced features, listed below.  The latest design is V2.1 (Feb 2026) as annotated below:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eV2.1: Heavier diodes, higher voltage rated input diodes - reduces chance of failure\u003c\/li\u003e\n\u003cli\u003eV2.1: Surge Suppressor added to handle long cable runs to each bay\u003c\/li\u003e\n\u003cli\u003e12 Red LED input indicators \u003c\/li\u003e\n\u003cli\u003e1 Green LED Output indicator\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty Power Quick Connectors\u003c\/li\u003e\n\u003cli\u003eUpgraded to handle up to 30 amp loads\u003c\/li\u003e\n\u003cli\u003eIntenal fuse protection for both the load (30 Amp) and relay (1 amp)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNOTE\u003c\/strong\u003e\u003c\/em\u003e: These are build to order. Pre-order now and please allow 1 - 2 weeks lead time.\u003c\/p\u003e\n\u003ch4\u003eFunctional Description\u003c\/h4\u003e\n\u003cdiv\u003eThis controller accepts a +24V AC or DC signal on the left side terminal strips, with the common on the right side terminal strip.  Any one or more +24V inputs will turn on the internal relay to power a 110 to 220VAC motor, pump, light, or other device.  Rated for devices up to 30 Amps. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eRed LEDs indicate when incoming signal is on (24V DC or AC).  Green LED shows when output relay is engaged.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eTypical application is for a bay carwash controller.  The carwash +24V solenoids which actuate selections such as soap, wax, etc. are hooked parallel with this controller.  If any solenoid is activated, the relay inside this unit turns on, activating a motor, pump, or other device.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"IC","offers":[{"title":"Default Title","offer_id":51535023145240,"sku":"IC-DH-12","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/9994\/1144\/files\/DSC01907m.jpg?v=1767913638","url":"https:\/\/oldskoolsurplus.com\/products\/d-h-12-carwash-controller-15-amp-77715","provider":"Old Skool Surplus","version":"1.0","type":"link"}