Can I Use a 2-Way Switch for 1-Way?

Yes, you can use a 2-way switch for 1-way switching. In fact, many manufacturers don't offer a one-way-only switch anymore — they only make two-way switches. This is because the cost of manufacture is very similar, so there's little to gain from producing a one-way-only version.

How do you wire 2-way switches for 1-way switching?

Most two-way switches have a Common terminal, as well as an L1 and L2 terminal. For one-way switching using a two-way switch, you simply connect the live cable to the COM terminal, and the switched live to the L1 terminal. The L2 terminal is left unused.

Why do manufacturers only make two-way switches?

The internal components needed for two-way switching add very little extra cost to manufacture compared to a one-way-only switch. Rather than producing two separate product lines, most manufacturers — including our own ranges — simply make every switch two-way capable, and it's wired as one-way or two-way depending on the installation.

Frequently Asked Questions

Can I use a 2-way switch for 1-way switching?

Yes. Connect the live cable to the COM terminal and the switched live to the L1 terminal, leaving L2 unused. Most switches sold today are two-way as standard.

Do I need to buy a special one-way switch?

No. Almost all switches, including our full range, are two-way as standard and can be wired for one-way use simply by leaving the L2 terminal unconnected.

Related guide: The Complete Wiring Guide.