switch board

Hello we’ve recently bought a property, built in the 90s. The lady before had work done to the downstairs. When we moved in we noticed a problem with the electrics. The sockets from downstairs are connected to the ring upstairs on the switchboard. We also found a live socket wire in a wall in...

What the right sensor apart the carbon monoxide to install on the utility cupboard where we have boiler switch board and washing machine. Thanks