The Watchman Sonic Advanced is a revolutionary electronic measuring gauge that monitors how much oil there is left in your oil tank and sets off an alarm in your home in the event of a sudden drop in oil levels. This helps you to ensure that you never run out of oil.

Optional upgrade to Watchman SENSiT, allowing you to get oil level notifications directly to your phone.

One model fits all

Quick and easy to install

Audible alarm when oil levels run out

Low power consumption

Unique serial number

Suitable for steel or plastic tanks

Measures tanks up to 3 metres in height

Sudden Drop (Alarm ON/OFF)

Waveguide mode (ON/OFF)

200 metre transmitter to receiver range