Ring Pro doorbell - power cable extension help

[Infinity]

Hi,

I've just upgraded my Ring 2 doorbell to a powered Ring Pro doorbell. The problem I have is the power adaptor cable I bought is too short. I need to extend it but am not sure on what cable to use to extend it. I've gone to some local electrical suppliers, Homebase and a few other places but can't find a cable that is the same. The cable is twin thin cable that I've seen on most power adaptors for kids toys etc.
The power adaptor is 18V 0.5A AV. I've seen speaker flex in Wickes, it says it is suitable for low voltage. Will it be OK for 18V? Any help will be appreciated. Thanks

 

[sparkymarka]

Yes

 

[secureiam]

The cable needs to be rated for 18 VAC

 

[Infinity]

Thanks, so I thought I'd ask at the customer service counter if the cable is rated 18 VAC, but after checking their website they were unable to tell me. I have taken a pic of the back packaging. Do any of these numbers so the rating?

 

[sparkymarka]

Be fine ....