... time monitor, Magnetic probe 0.5mm accuracy Windbell Tank level monitoringAC220V or 110V, 8'' colorful touch-screen,RS- ... 12 maximum if need. Real-time monitoring oil level, water level and temperature. Real-time clock Automatic adjustment on volume ... alarm Customer setting oil level, water level, and temperature alarm, visible and audible Alarm for oil level, water level and temperature. History alarm ...