exactly the same as this one but has the buzzer option (it sounds when level gets too high or too low)
http://www.ebay.co.uk/itm/Sierra-RS-...item3cf22e5d90


Been fitted to car, ran for about 100 miles and I've taken it out as i spend more time watching the monitor than the road!

£200 delivered, paypal gift only

Pics of the actual thing here
https://www.icloud.com/photostream/#A25oqs3qP0Pul