{"product_id":"esu-51970-i-o-expansion-board-21mtc-4x-aux-2x-servo-for-v4-0-decoders","title":"ESU 51970 I\/O Expansion Board — 21MTC, 4x AUX + 2x Servo (V4.0 Decoders)","description":"\u003cp\u003eThis I\/O expansion board plugs onto the \u003cstrong\u003e21MTC\u003c\/strong\u003e interface of ESU V4.0 decoders and breaks out additional control lines as \u003cstrong\u003efour AUX function outputs and two servo outputs\u003c\/strong\u003e. It's the way to unlock extra lighting, special-function and servo capability from a 21MTC decoder install.\u003c\/p\u003e\u003cp\u003eA useful upgrade for detailed models that need more outputs than the basic socket exposes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdds:\u003c\/strong\u003e 4 AUX outputs + 2 servo outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e 21MTC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor:\u003c\/strong\u003e ESU V4.0 decoders\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBrand-new, genuine ESU (Electronic Solutions Ulm). Ships from our shop in Oakville, Ontario.\u003c\/p\u003e","brand":"ESU","offers":[{"title":"Default Title","offer_id":45176996036790,"sku":"ESU-51970","price":54.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/5131\/1286\/files\/title_51970.jpg?v=1781122957","url":"https:\/\/oakvillemodeltrains.com\/products\/esu-51970-i-o-expansion-board-21mtc-4x-aux-2x-servo-for-v4-0-decoders","provider":"Oakville Model Trains Depot","version":"1.0","type":"link"}