WatchmanSonic
The WatchmanSonic uses ultrasonic level measurement techniques to continuously measure the level of oil in your tank.
This is then sent wirelessly from a transmitter on top of the tank to the receiver which is plugged into a mains wall socket inside your home. When the oil level falls below 10%, a fuel dispensing pump symbol appears on the receiver, indicating that it's time to order more oil.
£68.19 inc. VAT (plus P&P)