{"product_id":"optoma-zk521st-b-4k-uhd-golf-simulator-projector-5000-lumens","title":"Optoma ZK521ST-B - 4K UHD Golf Simulator Projector | 5000 Lumens","description":"\u003cp\u003e\u003cstrong\u003eThe Flagship. 5,000 Lumens of True 4K. Built for Always-On Simulator Installations.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eOptoma ZK521ST-B\u003c\/strong\u003e is Optoma's flagship golf simulator projector — \u003cstrong\u003e5,000 lumens\u003c\/strong\u003e of laser-powered brightness in native 4K UHD resolution. Engineered for 24\/7 reliability, it delivers brilliant, shadow-free projection even in rooms with ambient light or high-traffic commercial environments.\u003c\/p\u003e\n\n\u003cp\u003eWith a \u003cstrong\u003e0.79:1 short throw ratio\u003c\/strong\u003e, the ZK521ST-B fills a 100\" screen from just under 6 feet away — close enough to stay ahead of your swing while providing flexible mounting options. The dedicated \u003cstrong\u003eGolf Sim picture mode\u003c\/strong\u003e delivers true-to-life greens and blues with impressive detailing, even with the lights on.\u003c\/p\u003e\n\n\u003cp\u003ePowered by Optoma's \u003cstrong\u003eDuraCore laser technology\u003c\/strong\u003e with a 30,000-hour lifespan and IP5X\/IP6X dust protection, the ZK521ST-B is designed for maintenance-free operation in demanding environments — from dedicated home simulators to commercial training facilities.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003e5,000 Lumens — Maximum Brightness\u003c\/strong\u003e\u003cbr\u003e\nThe brightest projector in Optoma's golf simulator lineup. Handles ambient light, daytime use, and lights-on play without washout.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eNative 4K UHD Resolution (3840 × 2160)\u003c\/strong\u003e\u003cbr\u003e\n8.3 million on-screen pixels deliver the sharpest fairways, clearest greens, and most legible simulator data available.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eShort Throw Design (0.79:1)\u003c\/strong\u003e\u003cbr\u003e\nProject a 100\" image from approximately 5.8 feet. Reduces shadows and keeps the projector safely ahead of your swing arc.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eGolf Sim Picture Mode\u003c\/strong\u003e\u003cbr\u003e\nTrue-to-life greens and blues with impressive detailing. Factory-calibrated for simulator graphics — works beautifully even with lights on.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003e24\/7 Operation Ready\u003c\/strong\u003e\u003cbr\u003e\nEngineered for continuous use with IP5X\/IP6X dust-protected optics. Ideal for commercial facilities, training centers, and always-on installations.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003e30,000-Hour DuraCore Laser\u003c\/strong\u003e\u003cbr\u003e\nZero lamp replacements. Instant on\/off. Consistent brightness and color performance across the entire lifespan.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eSmart Setup \u0026amp; Management\u003c\/strong\u003e\u003cbr\u003e\nOptoma Smart Control app for phone-based setup, Smart Fit auto-alignment, and Optoma Management Suite (OMS) for centralized IT control.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eSustainable Design\u003c\/strong\u003e\u003cbr\u003e\n50%+ recycled metal and PCR materials. Mercury-free laser. 100% recyclable packaging. Aligned with Optoma's Green Promise.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho Is This For?\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e✅ \u003cstrong\u003eBright rooms with ambient light\u003c\/strong\u003e where lower-lumen projectors wash out\u003cbr\u003e\n✅ \u003cstrong\u003eCommercial simulator installations\u003c\/strong\u003e and training facilities\u003cbr\u003e\n✅ \u003cstrong\u003eAlways-on environments\u003c\/strong\u003e requiring 24\/7 reliability\u003cbr\u003e\n✅ \u003cstrong\u003eLarge screens (150\"+)\u003c\/strong\u003e where brightness and resolution both matter\u003cbr\u003e\n✅ \u003cstrong\u003eSerious home simulators\u003c\/strong\u003e where image quality is the top priority\u003cbr\u003e\n✅ \u003cstrong\u003eMulti-use spaces\u003c\/strong\u003e that need to perform in varied lighting conditions\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTechnology:\u003c\/strong\u003e Single-chip DLP\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNative Resolution:\u003c\/strong\u003e 4K UHD (3840 × 2160)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePixel Count:\u003c\/strong\u003e 8.3 million (True 4K, CTA approved)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHDR Support:\u003c\/strong\u003e HDR10, HLG (Hybrid Log Gamma)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAspect Ratio:\u003c\/strong\u003e 16:9\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBrightness \u0026amp; Light Source\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrightness:\u003c\/strong\u003e 5,000 lumens (ISO 21118)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLight Source:\u003c\/strong\u003e DuraCore Laser\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLight Source Life:\u003c\/strong\u003e Up to 30,000 hours\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDust Protection:\u003c\/strong\u003e IP5X\/IP6X sealed optical engine\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e24\/7 Operation:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLens \u0026amp; Throw\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThrow Ratio:\u003c\/strong\u003e 0.79:1 (fixed, short throw)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eScreen Size Range:\u003c\/strong\u003e Up to 300\" diagonal\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e100\" Screen Distance:\u003c\/strong\u003e Approximately 5.8 feet\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKeystone Correction:\u003c\/strong\u003e ±15° vertical \/ horizontal\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFour-Corner Correction:\u003c\/strong\u003e Yes\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProjection Orientation:\u003c\/strong\u003e 360° (floor, ceiling, portrait)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eConnectivity \u0026amp; Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHDMI:\u003c\/strong\u003e Yes (multiple inputs)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e RS232, RJ45 LAN, HDBaseT compatible\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBuilt-in Speaker:\u003c\/strong\u003e Yes\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eControl Systems:\u003c\/strong\u003e AMX, Crestron RoomView, Extron IP Link, Telnet compatible\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOTA Updates:\u003c\/strong\u003e Yes (over-the-air firmware updates)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSoftware \u0026amp; Apps\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptoma Smart Control App:\u003c\/strong\u003e iOS and Android\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Fit:\u003c\/strong\u003e Camera-based auto screen alignment\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Move:\u003c\/strong\u003e Obstacle detection and image repositioning\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptoma Management Suite (OMS):\u003c\/strong\u003e Cloud-based or LAN device management with 24\/7 monitoring\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePicture Modes:\u003c\/strong\u003e Golf Sim, Cinema, Presentation, and more\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e3D Support:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Mounting\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe ZK521ST-B's short throw design and professional-grade features support flexible installation:\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThrow Distance:\u003c\/strong\u003e 100\" screen from ~5.8 feet. This is further than the ultra-short-throw ZK431ST-B but still compact enough for most simulator rooms.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCeiling Mount:\u003c\/strong\u003e Standard projector mounting with professional-grade build quality.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAlignment:\u003c\/strong\u003e Smart Fit feature uses your smartphone camera to detect the screen frame and automatically correct image alignment.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Move:\u003c\/strong\u003e Automatically detects obstacles and repositions the projection to a clear, unobstructed area.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e 360° projection allows any mounting angle.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRemote Management:\u003c\/strong\u003e Optoma Management Suite (OMS) enables centralized IT monitoring and control across multiple networked devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe \"-B\" Designation:\u003c\/strong\u003e The ZK521ST-B is Optoma's golf simulator variant of the ZK521ST. It includes integrated Golf Sim picture mode optimized for simulation applications.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGolf Simulator Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe ZK521ST-B works with all major golf simulation software and launch monitors:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSoftware:\u003c\/strong\u003e GSPro, E6 Connect, TGC 2019, Awesome Golf, Creative Golf, and more\u003cbr\u003e\n\u003cstrong\u003eLaunch Monitors:\u003c\/strong\u003e SkyTrak, Garmin R10\/R50, Mevo+, FlightScope, Rapsodo, Foresight, GolfJoy, Uneekor, and any monitor with HDMI output\u003c\/p\u003e\n\n\u003cp\u003eThe Golf Sim picture mode delivers true-to-life greens and blues with impressive detailing, optimized for simulator graphics even with lights on.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eZK521ST-B vs. Other Optoma Golf Sim Projectors\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003ctable\u003e\n    \u003ctr\u003e\n        \u003cth\u003eSpecification\u003c\/th\u003e\n        \u003cth\u003eGT2400HDR\u003c\/th\u003e\n        \u003cth\u003eZK431ST-B\u003c\/th\u003e\n        \u003cth\u003eZK521ST-B\u003c\/th\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eResolution\u003c\/td\u003e\n        \u003ctd\u003e1080p Full HD\u003c\/td\u003e\n        \u003ctd\u003e4K UHD\u003c\/td\u003e\n        \u003ctd\u003e4K UHD\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eBrightness\u003c\/td\u003e\n        \u003ctd\u003e4,200 lumens\u003c\/td\u003e\n        \u003ctd\u003e4,100 lumens\u003c\/td\u003e\n        \u003ctd\u003e5,000 lumens\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eThrow Ratio\u003c\/td\u003e\n        \u003ctd\u003e0.496:1\u003c\/td\u003e\n        \u003ctd\u003e0.496:1\u003c\/td\u003e\n        \u003ctd\u003e0.79:1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003e100\" Distance\u003c\/td\u003e\n        \u003ctd\u003e~4 feet\u003c\/td\u003e\n        \u003ctd\u003e~1.3 feet\u003c\/td\u003e\n        \u003ctd\u003e~5.8 feet\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003e24\/7 Operation\u003c\/td\u003e\n        \u003ctd\u003eYes\u003c\/td\u003e\n        \u003ctd\u003eNo\u003c\/td\u003e\n        \u003ctd\u003eYes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eDust Protection\u003c\/td\u003e\n        \u003ctd\u003eIP6X\u003c\/td\u003e\n        \u003ctd\u003eStandard\u003c\/td\u003e\n        \u003ctd\u003eIP5X\/IP6X\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eMAP Price\u003c\/td\u003e\n        \u003ctd\u003e$1,299\u003c\/td\u003e\n        \u003ctd\u003e$1,799\u003c\/td\u003e\n        \u003ctd\u003e$2,699\u003c\/td\u003e\n    \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eChoose the ZK521ST-B\u003c\/strong\u003e if you need maximum brightness (5,000 lumens), 4K resolution, AND commercial-grade 24\/7 reliability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChoose the ZK431ST-B\u003c\/strong\u003e if you need 4K resolution with the tightest possible throw ratio (0.496:1) for extremely space-constrained installations.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChoose the GT2400HDR\u003c\/strong\u003e if budget is the priority and 1080p resolution meets your needs.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWhen 5,000 Lumens Matters\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eBrightness requirements depend on your environment:\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDedicated dark room:\u003c\/strong\u003e 3,000-4,000 lumens is sufficient\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSome ambient light (windows, overhead lights):\u003c\/strong\u003e 4,000-5,000 lumens recommended\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLights-on play:\u003c\/strong\u003e 5,000+ lumens prevents washout\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLarge screens (150\"+):\u003c\/strong\u003e More lumens needed to fill larger area\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommercial\/training facilities:\u003c\/strong\u003e 5,000+ lumens for consistent performance across varying conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe ZK521ST-B's 5,000 lumens provides headroom for virtually any lighting condition — you can always dim a bright projector, but you can't add lumens after purchase.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCommercial \u0026amp; Multi-Unit Considerations\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe ZK521ST-B includes features designed for commercial and multi-unit installations:\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e24\/7 Operation:\u003c\/strong\u003e Engineered for continuous use without degradation\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIP5X\/IP6X Dust Protection:\u003c\/strong\u003e Sealed optics for dusty environments (garages, basements, commercial bays)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptoma Management Suite (OMS):\u003c\/strong\u003e Centralized monitoring and control of multiple projectors from a single platform\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOTA Firmware Updates:\u003c\/strong\u003e Remote updates without USB drives or on-site technicians\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHDBaseT Compatibility:\u003c\/strong\u003e Long cable runs for professional installations\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eControl System Integration:\u003c\/strong\u003e AMX, Crestron, Extron, and Telnet compatible\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n    \u003cli\u003eOptoma ZK521ST-B Projector\u003c\/li\u003e\n    \u003cli\u003eAC Power Cord\u003c\/li\u003e\n    \u003cli\u003eRemote Control\u003c\/li\u003e\n    \u003cli\u003eBatteries\u003c\/li\u003e\n    \u003cli\u003eQuick Start Guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eProjector:\u003c\/strong\u003e 3-year limited warranty\u003cbr\u003e\n\u003cstrong\u003eLight Source:\u003c\/strong\u003e Covered under DuraCore laser technology (30,000 hours rated life)\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the ZK521ST-B more expensive than the ZK431ST-B?\u003c\/strong\u003e\u003cbr\u003e\nThree key differences: more brightness (5,000 vs 4,100 lumens), 24\/7 operation rating, and IP5X\/IP6X dust protection. These features matter for brighter rooms, commercial use, and demanding environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs 5,000 lumens overkill for a home simulator?\u003c\/strong\u003e\u003cbr\u003e\nIt depends on your space. If you have a dedicated dark room with no ambient light, 4,100 lumens is sufficient. If you have windows, overhead lights, or want to play with lights on, 5,000 lumens prevents washout and maintains vivid colors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the throw ratio longer than the ZK431ST-B?\u003c\/strong\u003e\u003cbr\u003e\nThe ZK521ST-B uses a 0.79:1 lens optimized for brightness and image quality. The ZK431ST-B's 0.496:1 ultra-short throw is tighter but delivers slightly less light. If mounting distance is extremely limited, choose the ZK431ST-B. If brightness is the priority, choose the ZK521ST-B.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow far from the screen do I mount it?\u003c\/strong\u003e\u003cbr\u003e\nApproximately 5.8 feet for a 100\" screen. Use Optoma's distance calculator for exact placement based on your screen size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat makes it \"24\/7 operation\" rated?\u003c\/strong\u003e\u003cbr\u003e\nThe ZK521ST-B is engineered for continuous use without thermal throttling or accelerated wear. Combined with IP5X\/IP6X dust protection, it maintains consistent performance in high-use environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it work with home automation systems?\u003c\/strong\u003e\u003cbr\u003e\nYes. Compatible with AMX, Crestron RoomView, Extron IP Link, and Telnet for full integration with home automation and commercial control systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I manage multiple ZK521ST-B projectors centrally?\u003c\/strong\u003e\u003cbr\u003e\nYes. Optoma Management Suite (OMS) provides cloud-based or LAN monitoring, diagnostics, and control across multiple devices from a single platform.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the Golf Sim mode actually different from other modes?\u003c\/strong\u003e\u003cbr\u003e\nYes. The Golf Sim picture mode is specifically calibrated for simulator graphics — greens, blues, fairways, and sky tones render with accurate, true-to-life color rather than oversaturated entertainment settings.\u003c\/p\u003e","brand":"Optoma","offers":[{"title":"Default Title","offer_id":49286647873763,"sku":null,"price":2699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/9721\/9555\/files\/01-1781275651_1600x_0e230f46-7a1c-4a16-b1be-7e257f13f1f7.webp?v=1782008552","url":"https:\/\/golfsimdepot.com\/products\/optoma-zk521st-b-4k-uhd-golf-simulator-projector-5000-lumens","provider":"Golf Sim Depot","version":"1.0","type":"link"}