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STACK Sockets' award-winning and worldwide patent-pending 4-pin connection system offers revolutionary extensibility and flexibility like never before. This surge protector has 4 US AC outlets and comes with a USB charging module, allowing you to plug in up to 5 devices at once. It has a built-in power switch, surge protection, and over current circuit for extraordinary protection to the connected equipment.

  • 4 US AC outlets for various types of appliances
  • Dual USB charging module for charging two other devices
  • 4-pin connection system allows adding other STACK modules (not included)
  • Built-in power switch, surge protection & over current circuit breaker for safety


  • Color: white
  • Finish: plastic surface
  • Materials: ABS
  • Dimensions: 14.41"L x 2.4"W x 1.42"H
  • Weight: 1lb
  • AC cable length: 3.3ft
  • Input power: 110Vac 60Hz
  • Output socket: 4 US AC
  • USB port: 2
  • On/off switch
  • Circuit breaker protection: 13A
  • Max surging voltage: 395V
  • Max surging current: 4,500A
  • Max surging joules: 525J
  • MOV: 140241K / 3PC (L-N, N-G, G-L)
  • Manufacturer's 1-year warranty


  • 1x STACK 4 US AC Outlet Surge Protector
  • 1x STACK DUAL 3.4A USB Charging Module


  • Ships to US
  • Expected Delivery: Dec 18 - Jan 1


  • All sales final.