It works perfectly for both. Perfect every time. Worked like a charm. It lives up to my expectation.

The product comes with a 90 day warranty. I was provided a sample product by the manufacturer for testing and unbiased evaluation. Very pleased with this purchase.

One toggle switch for on/off and one for fº or cº. The on and off switch works seamlessly! Luckily the battery is easy to replace.

It has a rugged build that won't break if dropped on the floor. Easy to read lcd display and easy to use controls – on/off and degrees f/c. Super easy insertion.

Left them two voice messages and no return. Emailed them twice and no response. Only reads celsius unless you force and hold the f/c switch all the way to the left. It's cheaper to throw away and get another than replace the battery when it runs out.