Where to plug in WattLock

Step 1: Count your socket circuits

Open your fuse box (consumer unit). Each switch labelled “sockets”, “ring” or “kitchen” is a separate circuit. You need one WattLock per socket circuit.

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Step 2: Choose a socket on each circuit

• Downstairs ring – a hallway or living room socket
• Upstairs ring – a landing or bedroom socket
• Kitchen circuit – a socket near the fridge or kettle
• Garage or extension – any socket on that circuit

Step 3: Plug in and look for the green light

Plug directly into the wall, switch on, and the green light confirms it's working.

The best sockets to choose

Any socket on the circuit works, but we suggest one that's easy to see so you can check the green light, and one that isn't constantly bumped by plugs going in and out. Many people choose a socket in the hallway, landing or kitchen.

If you have one socket circuit per floor, place one WattLock downstairs and one upstairs. If your kitchen has its own circuit, put a third unit in the kitchen – this is the circuit with the fridge, freezer and washing machine, which are often the biggest users.

Common mistakes to avoid

• Putting two WattLocks on the same circuit and none on another
• Plugging into an extension lead instead of the wall
• Using a socket hidden behind furniture where it can't breathe
• Plugging into a lighting circuit (WattLock works on socket circuits)

How many do I need?

One WattLock per socket circuit is the rule. Look at your consumer unit (fuse box) – socket circuits are usually labelled "sockets", "ring", "upstairs sockets", "kitchen" or similar, and use 32A breakers. Count them, and choose the matching bundle.