Two of our basic mains powered Oil Water Interceptor alarms monitoring two tanks on this site. The video shows a falsified alarm, demonstrating the LED change and Audible Alarm functions (also the mute process). Oil Water Interceptors are used to capture hydrocarbon run-off from a site. They also protect from water pollution incidents occuring off-site, generally in surface water receptors like lakes and rivers. Protecting the natural environment should be a high priority to any Company. Look at Environment Agency PPG3 to explore the need for and specification thereof, to comply with best practice.