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Salter 540A thermometer battery: 2 × AAA

The Salter 540A thermometer takes two AAA 1.5V batteries.

AAA

AAA× 21.5V batteries

Also sold as LR03, E92, MN2400 · AAA details

Source: Salter 540A manual

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Before you swap it

  • Change all two at once. Don't mix old batteries with new ones or one brand with another, since the weakest one in the set drags the others down with it.

Quick answers

What battery does the Salter 540A take?

Two AAA 1.5V batteries.

Is LR03 the same as AAA?

Yes. LR03, E92 and MN2400 are all the same cell as AAA, sold under another name.