What this product is - A voltage regulator with a relay that acts solely as a switch and does not change the output voltage. The external charger and load determine actual charging and discharging. How it works - Discharge mode OUT - Set the upper limit UP and the lower limit. - If the battery voltage is greater than or equal to UP, the relay closes and discharging begins. - If the battery voltage is less than or equal to the lower limit, the relay opens to complete the automatic discharge cycle. - When the relay is closed in this mode, the OUT indicator blinks to show discharging is in progress. - Charge mode IN - Set the upper limit UP and the lower limit. - If the battery voltage is less than or equal to the lower limit, the relay closes and the charger begins charging. - If the battery voltage is greater than or equal to UP, the relay opens to complete the automatic charging cycle. - When the relay is closed in this mode, the IN indicator blinks to show charging is in progress. Key benefits - Automates battery maintenance by switching charging or discharging within a defined voltage window, reducing the need for constant monitoring. - Protects the battery from deep discharge and overcharge by using adjustable upper and lower voltage limits. - Simple installation: a single relay switches the external charger or load without altering voltage itself. Important attributes - Function: switches external charging and discharging according to set voltage limits; does not itself regulate voltage. - Compatibility: designed to work with external chargers and loads attached to the battery system, using adjustable upper and lower voltage thresholds. - Indicators: OUT and IN indicators show the current mode; OUT blinks during discharge, IN blinks during charging. - Size and build: designed as a compact control device with adjustable thresholds for straightforward integration, built for reliable switching performance.