{"product_id":"directed-508d-dual-zone-field-disturbance-sensor","title":"Directed 508D Dual-Zone Field Disturbance Sensor","description":"\u003cp\u003eThe Directed 508D is a dual-zone field disturbance sensor designed to add proximity and interior-intrusion detection to a compatible vehicle security system. It creates adjustable sensing fields that react to moving high-density objects near and within the protected area. This makes it a practical security accessory for vehicles where conventional door and shock triggers do not provide perimeter coverage.\u003c\/p\u003e\u003cp\u003eThe 508D is especially suited to convertibles, removable-top vehicles, and other applications where open-cabin protection is useful. Its outer field can provide a pre-warning response before an object reaches the inner protected field. The inner field is intended to activate a connected system's full alarm response when intrusion is detected closer to or inside the vehicle.\u003c\/p\u003e\u003cp\u003eDetection is based on RF field-disturbance technology operating at 2.4 GHz rather than ultrasonic sensing. The sensor responds to movement by high-density objects and is designed not to react to wind or rain. Its field can extend through upholstery, glass, plastic, and wood, while metal blocks the field.\u003c\/p\u003e\u003cp\u003eSeparate negative-trigger outputs support two stages of security-system response. The green wire provides a short pre-warning output for the outer field, while the blue wire provides a longer full-alarm output for the inner field. Built-in status LEDs indicate which field has detected motion during setup and testing.\u003c\/p\u003e\u003cp\u003eThe 508D fits into an alarm upgrade path for compatible Directed systems and other security systems able to accept appropriate trigger connections. It can interface with a Directed system that offers a multiplex input for perimeter-intrusion response, or with an optional 516U Vocalarm module. Field size is adjustable, allowing the installer to tune coverage for the vehicle and installation location.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Zone Detection:\u003c\/strong\u003e Provides separate outer warning and inner alarm sensing areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.4 GHz RF Technology:\u003c\/strong\u003e Detects moving high-density objects using field disturbance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvertible-Friendly Coverage:\u003c\/strong\u003e Adds protection where open-cabin security is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Fields:\u003c\/strong\u003e Lets the installer tailor outer and inner coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate Trigger Outputs:\u003c\/strong\u003e Supports pre-warning and full-alarm system responses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus LEDs:\u003c\/strong\u003e Green and red indicators assist with adjustment and testing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe 508D uses a compact wired sensor module with separate power, ground, pre-warning, and full-alarm connections. Its RF sensing field is designed to pass through common non-metal cabin materials, including upholstery, glass, plastic, and wood, but is blocked by metal. The unit can be mounted directly to metal when required.\u003c\/p\u003e\u003cp\u003eMount the sensor along the vehicle centerline, commonly beneath a center console or armrest, while keeping its adjustment controls accessible. Connect red to constant +12V, connect black to ground or an armed-output ground as appropriate, and connect the green and blue negative-trigger outputs to the compatible security system. Adjust the combined outer\/inner field first, then adjust the inner field; the sensor has a 10-second activation delay after power is applied.\u003c\/p\u003e","brand":"Viper","offers":[{"title":"Default Title","offer_id":45633310195782,"sku":"508D","price":86.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/61V7IcIBeyL.jpg?v=1784420443","url":"https:\/\/audiowatt.store\/products\/directed-508d-dual-zone-field-disturbance-sensor","provider":"Audio Watt Store","version":"1.0","type":"link"}