... 4-20mA DS3A series Panel Meter for pressure/temperature/weight/humidity/level measurememtFeatures:1) Signal input:regular ... display/pressing to clear zero,display modification and parameter adjust function.easy to operate.3) ... ,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer, ...