This auction is for the printer ONLY. I’ve shown it working with my pat tester. So just to recap….. you are buying the PRINTER that is all not the pat tester. It’s had a new battery because as you all know they don’t last 5 minutes if left alone at the bottom of your bag for any length of time. They need to be used and charged up regularly or they die. You’ll see most on eBay not shown working because they don’t . All the batteries are dead and they’re selling it like that and not mentioning it. So this printer only works with the 250 + as shown connected. For the tester see my other items . See my feedback for honesty