{"product_id":"dt-4-rolling-stock-detector","title":"DT-4 Rolling Stock Detector","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. Requires 10-18V DC. Independent of track power. Compatible with radio or carrier control systems.","brand":"Circuitron","offers":[{"title":"Default Title","offer_id":53179136508269,"sku":"800-5204","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0929\/7228\/6317\/files\/800-5204_01_76696487-6be1-4108-b955-43f614b4ddff.gif?v=1774984169","url":"https:\/\/walthers.com\/products\/dt-4-rolling-stock-detector","provider":"Walthers","version":"1.0","type":"link"}