Homebase RCD adaptor
Price: £7.99 Trip speed: 21.7ms
The offering from Homebase looks just like the Focus. Unusually, it doesn't feature a built-in removable 13A fuse and we did not like the small indicator hole, which made it hard to see whether red or black was showing. It was also the slowest device tested, and the only one that broke the 20ms barrier.
