Monster High Definition HDP 850G PowerCenter

Product information

Monsters Green Power Centres are energy efficient power strips with surge protectors. They feature a control system, which will automatically turn off devices connected to one of its sockets whenever they’re not in use, saving you money on your electricity bills and helping to look after the planet in the process.

Dual Mode plus technology will disconnect from dangerous power sources and sound an alarm, to make sure anything plugged into it is safe.

They are also certified fireproof, through the use of ceramic blocks which are used to protect sensitive parts of the surge protector, ensuring that they cannot catch fire.

Product Highlights

  • 8x Colour coded sockets – Full surge protection

  • Full surge protection for Ethernet, phone line, TV Aerial and 2x F-Pin for satellite recorders

  • Green Power control system

  • Fireproof MOV system

  • PLC (Powerline Communications) compatible socket

  • Lifetime guarantee

  • Up to £250,000 Connected equipment warranty

Cable Length
Eligible for International Delivery


  • Click & collect

    Click & collect from John Lewis and Waitrose shops Thursday from 2pm
    Find out more
  • Collect+

    Collect + from a local shop from Thursday, postcode exclusions apply
    Find out more
  • UK delivery

    Standard delivery within 5 working days
    Named or Saturday UK delivery
    Named day UK delivery pre-10.30am
    Find out more
  • International delivery not available


We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.

Q & As

Rated 3.5 out of 5 by 2 reviewers.
Rated 5 out of 5 by So good I just bought another one Probably the most expensive surge protector ever purchased, but by far the best too. Like every serious investment, it's worth reading the guide/instructions before you open the packaging (which isn't easy, the plastic wrapping is challenging enough). The reward is a very clever and useful piece of kit. My first one is looking after my IT, the second is going to take care of my TV, PVRs, Blu-Ray, soundbar and gaming consoles. The bonus is also having protection for your aerial connections, TV connections, and phone connections. Comes with labels you can attach to your items, so no more guessing which plug belongs to which item, very thoughtful indeed. 20 October 2015
Rated 2 out of 5 by Should have been 5 stars I bought this from my local store to run my home cinema equipment. It was very well equipped and seemed ideal until I tried to fix it to the wall. It had four keyhole type screw connectors, except they were placed horizontally. The instructions said to drill four holes to match the larger holes, and to screw the pan headed screws and spacers into the wall, neither of which were supplied-place the unit over the the pan headed screw and press DOWN, to lock the unit, since the slots were horizontal, this would not work. The slots were so narrow, and such a tight fit, that even by attempting to move the unit horizontally it would not lock in place, so the unit was reluctantly returned to the store 25 January 2014
  • 2015-12-15 T16:01:04.165-06:00
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Product code :


6 in stock