To enter the high current value: Returning to the normal operation screenthen use the Up or Down button to enter the high current value. After entering the value, the device stores the value entered as high current set value.When the current rises above the set current value, the relay immediately stops, the relay LED (RLY) goes off and the fault LED [ERR] turns on, contact output is in NC position. When the current drops below 0.5A of the set value, the relay is triggered, the error LED goes off and the relay LED is turned on, contact output is in NO position. Specifications Operating Voltage(Un)....: 150V - 270V AC Operating Frequency.......: 50/60 Hz. <;4VA Operating Temperature..: -20°C.....+55°C Measuring Range............: 100mA - 5.5A Measurement Precision..: ±%2 Display............: 3 x 20mm and 3 x 14mm display Connection Type..............: Plug-in terminal Cable Diameter.................: 1,5mm² Panel Hole Sizes................: 91x91mm Color: Black Material: ABS Package Contents: 1*Adjustable Ammeter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.