catalogue of IP68 Weather Proof Ultrasonic Level Meter, GE-1202B ultrasonic level meter is compacted design, better performance in bad environment, IP68 protect grade, it could supply all kinds of output signal, e.g. 4-20mA, 0-20mA, 0-5V, 1-5V, RS485, RS232, Modbus, MCU, PC, PCASK, NPN Switch, Relay Switch.