Voltage Converter -Discharger Board Module Highlights Generic Brand Discharger Board Module Description: Name:Battery Charger Discharge Board and Overvoltage and Undervoltage Protection Timing Charge and Discharge with communication function Highlights of the module: 1. Battery charge and discharge control, automatic power failure after setting. 2. Can set charging and discharging time, 3. With serial communication function, relay working status can be monitored in real time through serial port. 4. Additional signal output, which can control other devices when meet relay conduction condition and output high level. 5., there is a one-button emergency stop function (STOP key), with reverse connection protection, reverse connection without burning. Working model: Upper voltage limit is UL1, voltage limit is nL1, voltage limit is higher than voltage limit (UL1>nL1). U-1: Load measurement: When the measurement voltage is lower than the lower limit voltage, the relay is energized and exceeds the upper limit voltage, and the relay is disconnected. U-2: load measurement time control: set the load (OP) time, when the measurement voltage is lower than the lower limit voltage, the relay sucks, after the suction starts counting the OP time, time is up, the relay is disconnected, the relay is higher than the upper limit voltage, the relay is disconnected. U-3: discharge detection: when the measurement voltage is lower than the lower limit voltage, the relay is disconnected, higher than the upper limit voltage, and the relay is absorbed. U-4: discharge detection time control: set the discharge (OP) time, when the measurement voltage is higher than the upper limit voltage, the relay sucks in, after absorption, it starts counting down the OP time. When the time comes, the relay is disconnected, when the measurement voltage is lower than the lower limit voltage, the relay is disconnected. U-5: pull in the gap: when the measurement voltage is between the upper and lower limits, the relay is energized and the rest is disconnected. Outside the U-6: suction interval: when the measured voltage is lower than the lower limit voltage or higher than the upper limit voltage, the relay will be energized, and the relay will be disconnected in other cases. Specification: Size: 5x2.8cm/1.96x1.10inch Package Include: 1 Piece Battery Charger Discharger Board (2 Pack)