Description:Using ultrasonic time of flight through fluid media, this sensor measures fuel levelaccurately. Highly reliable and durable by design with no moving parts. The plastic housing is protected by a stainless steel bottom cover plate, and steel mounting bolt spacers.Attributes:• 4 hole mount pattern• Two operating ranges• 4 kHz PWM output (Pulse Width Modulation) Application:• Large tall fuel tank applications.• Diesel fuel and Bio Diesel fuel• Designed to operate in difficult conditions (High vibration and shock).• Cat Level Sensors are application or tank specific. Consult your owner’s manual or contact your local Cat Dealer for more information.