With Signal Lamp FOM 330 in 8 Steps download change frying oil at the right time measures hot oil directly in the fryer restaurants / canteens no health risks caused by spent oil fast, safe on-site measurement enables setting of ideal frying point exact determination of frying oil quality 0 ... 40% polar compounds temperature range up to 200 °C (428 °F) limit indication by flashing light (red/yellow/green) with simple oil type selection with one button