Panel Meter Design service Signal input:4-20mA/0- ... analog output 4-20mA DS3A series Panel Meter for pressure/temperature/weight/humidity/level measurememtFeatures:1) Signal input:regular:4 ... including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, ...