The market leading Watchman Sonic consists of a transmitter and receiver unit. The transmitter unit is fitted to the tank and measures the level of fuel inside. This information is relayed wirelessly to the receiver unit, which cleverly and conveniently plugs into a standard 3 pin domestic socket, where it is displayed via an easy to read LCD display.
One model fits all
Quick and easy install
Suitable for steel or plastic tanks
12 months replacement guarantee
200 metre transmitter and receiver range