1 PV: Display the setted value or the parameter code (ref the functional parameter table) at setting or the failure code in case of a failure, “HH” means the sensor’s wire is broken or the input is over the upper limit of the range and “LL” means the sensor is short-circuit or reversely wired.
2 SV: showing the seted data or showing the data at setting.
3 Temperature and current switch over button
4 OUT: main control output indicator lamp, it will be changed according to the load voltage, bright-dark change
5 AT: The self-setting indicator, will be lit at setting and go out at the end.
6 SET: function setting key, for setting value and parameter value.
7 Temperature and current switch over direction.
8 ALM: temperately too much low alarming or them couple broken alarming.
9 A: increase the data key
10 V: decrease the data key
11 POWER: The power switch (leftward, rightward on).