Module function:
Function 1:
Voltage measurement: select this function, the relay will not act, digital display current measuring voltage;
Function 2:
Charging monitoring: when the measurement voltage is lower than the lower limit voltage, the relay is pulled in, higher than the upper limit voltage, the relay is disconnected;
Function 3:
Discharge monitoring: when the measurement voltage is higher than the upper limit voltage, the relay is pulled in, lower than the lower limit voltage, the relay is disconnected;
Function 4:
Pull in interval: when the measuring voltage is between the upper limit and the lower limit, the relay is pulled in, and other conditions are disconnected;
Function 5:
Out of range pull in: when the measurement voltage is lower than the lower limit voltage, or the measurement voltage is higher than the upper limit voltage, the relay is pulled in; otherwise, the relay is disconnected.
Warm hint: the controller will automatically judge which is the upper limit voltage and which is the lower limit voltage of the preset voltage V1 and V2 according to different functions

Specification:
Color: Red
Material: plastic
Operating voltage: DC12V/24V(optional) (should not exceed the nominal voltage of +/- 10%)
Operating current: Operating temperature: Recommended -20~ 60℃(limit range -30~70℃)
Measuring range: 0-99.9V
Load capacity: relay normally open port maximum load capacity: DC 0-30V / 10A, AC 0-250V / 10A
Relay normally closed port maximum load capacity: DC 0-28V / 10A, AC 0-125V / 10A
Module interface:
Input end
1, DC +: positive DC power supply
2, DC-: DC power supply anode
3, V +: measuring voltage positive
4, V-: measuring the negative voltage
Relay load output:
1, NO: relay normally open interface, the relay pull before the open, after the suction with COM shorted
2, COM: