Automatic Relay Module Control Switch Energy-saving 6-60V Batterys Protections Module with LEDs Indicator Digital Tube Display

Features:
Three control buttons, 4 digital tube display, 1 LEDs charge indicator.
Reduce the brightness of digital display, save energy and protect eyes.
Mode status: standard mode, energy-saving mode, setting mode, voltage calibration, factory setting mode.
It can charge 6-60V acid batterys and lithium batterys.
The default starting charge voltage is DC12V and the cut off charge voltage is 14.8V.
1% high precisions voltage divider makes the voltage measurement more accurate.
The voltage accuracy and resolution are 0.1V and have calibration function.