Loop-Powered Two-Wire 4-20mA Conditioner/Isolator	TWI-22
Loop-Powered Two-Wire Millivolt to 4-20mA Converter/Isolator	TWI-MVX
Loop-Powered Two-Wire pH to 4-20mA Converter/Isolator	TWI-PH1
Loop-Powered Two-Wire RTD to 4-20mA Converter/Isolator	TWI-RTX
Loop-Powered Two-Wire Slide-Wire to 4-20mA Converter/Isolator	TWI-SLX
Loop-Powered Two-Wire Thermocouple to 4-20mA Converter/Isolator	TWI-TXX