{"product_id":"circuitron-800-5204-dt-4-rolling-stock-detection-unit","title":"Circuitron 800-5204 DT-4 Rolling Stock Detection Unit","description":"Ideal for spotting a hidden train or piece of rolling stock. Four independent detection units combined onto one circuit board, can be used separately or together to control external devices. Supplied with four Opto-Sensors that mount between rails to detect movement. When train covers a sensor, the unit activates any connected DC accessory, such as an indicator light on a control panel. Independent sensitivity controls are provided for adjusting each Opto-Sensor to lighting conditions. Constructed on a 3 x 3\" printed circuit board.\u003cbr\u003e\u003cbr\u003e4 optical sensing points for all scales\u003cbr\u003e4 outputs drive LEDs or lamps\u003cbr\u003e10-18 volt DC input","brand":"Circuitron","offers":[{"title":"Default Title","offer_id":42130181423186,"sku":"CIR-800-5204","price":55.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/3410\/2098\/files\/CIR-800-5204-2__52748.jpg?v=1756152230","url":"https:\/\/modeltrainstuff.com\/products\/circuitron-800-5204-dt-4-rolling-stock-detection-unit","provider":"Model Train Stuff","version":"1.0","type":"link"}