
ZK451
The ZK451 brings True 4K UHD clarity and long-life laser reliability to classrooms, conference rooms, and professional spaces, delivering crisp, detailed visuals with the low-maintenance performance that busy environments demand.
True 4K UHD Resolution - Presentations, spreadsheets, and video render with exceptional sharpness and readability.
• 4,500 Lumens* of Brightness - Vivid, clear images even in rooms with ambient light.
• 30,000 Hour DuraCore Laser - Say goodbye to lamp replacement, reducing downtime and lowering total cost of ownership.
• Compact Design - Slim and lightweight that easily fits any professional space.
• Professional AV Control - Optoma Management Suite (OMS™) enables centralized monitoring and control across multiple devices.

ZK431ST
Crisp 4K from wall to wall: Native 4K UHD (3840×2160) makes text, data, and imagery sharp and readable across screen sizes up to 300"
• Project big from tight spaces: 0.496:1 short throw lens fills the screen from just 1.3 feet away—no more crowded rooms or presenter shadows
• Bright enough for real classrooms: 4,100 lumens keep images clear and vibrant in rooms with controlled to moderate ambient light
• No lamps. No maintenance. 30,000 hours: DuraCore laser technology means zero replacement costs and no unexpected downtime
• Install anywhere: Four-corner correction, ±15° keystone adjustment, and 360° projection flexibility handle virtually any room layout
• Smart setup from your phone: The Optoma Smart Control App guides screen alignment and gives full projector control from a mobile device

ZK521ST
Crisp 4K from wall to wall: True 4K UHD (3840×2160) makes text, data, and imagery sharp and readable across screen sizes up to 300"
• Project big from tight spaces: 0.79:1 short throw lens fills the screen from just 5.8 feet away
• Sustainable design: 50% recycled metal and PCR materials
• Optoma Management Suite (OMS): Enables centralized IT monitoring and control across multiple networked devices
• Optoma Smart Control App: Intelligent screen alignment and remote control directly from your mobile device






