... relay outputs applicate to any non-linearity sensors. DS3 series universal Sensor IndicatorFeatures:1, Input: regular: 4-20mA/0-75mV/0 ... Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay ...