Quickly and easily find a hotspot for wireless internet connections without having to boot up your computer. LEDs indicate the presence of a wireless network and signal strength
Detects 802.11b and 802.11g
Three LED indicate signal presence and strength
Item Number 386710
If you look for this deal via staples.co.uk, the price comes up as £19.99 - however, in the email I recieved, it is showing as £9.99. The "Go To Deal" link is the link from the email. Hope it works!
EDIT: "Just to add that the prices at Staples are ex. VAT so you need to add 17.5% to the cost plus it's £2.90 p&p unless you spend over £30 NET of VAT." (Thanks, sootyvrs)