The Watchman Sonic Advanced is a remote oil level monitor, which allows you to monitor your tanks oil level from the convenience of your home.  It's ideal for fitting both single-skinned and bunded plastic oil tanks. 

How it works:

1. The transmitter sits on top of the tank and using ultrasonic level measurement techniques, constantly measures the level of oil in the tank. 
2. It then transmits that information to the receiver which is plugged into an electric wall socket, located in a convenient place within the house. 
3. The height of the liquid is displayed on a LCD screen on the receiver. The householder can monitor the level of oil in their tank from inside their home.
4. When the level of oil in the tank gets below 10%, the fuel dispensing pump symbol appears, indicating to the householder that it is time to order some more oil.

Features include:

• One model fits all tanks up to 3m in height
• Quick and easy to install
• Suitable for steel or plastic oil tanks
• 12 months manufacturers product replacement guarantee
• Low power consumption
• 200 metre transmitter to receiver range
• Option of an audible setting sending out a buzzing tone when oil levels run low
• Receiver fits into a standard 13 amp domestic socket
• Requires no power source at the tank (long-life replaceable lithium battery provided)

This product is supplied with full installation instructions (a copy of which can be downloaded in the product data).