Question: what is the difference between level switch and level transmitter?
Answer: What is the difference between a level switch and a level transmitter? ... The switch output is typically either a voltage free contact or if it is an electronic switch, a fixed voltage e.g. 12 volts when ON and 0 volts when OFF. A transmitter has a variable output signal, 4 to 20 milliamps current loop is the most common.