CZH-LABS Electronics-Salon Low Voltage Disconnect Module LVD, 12V 30A, Protect/Prolong Battery Life. Part number: MD-D1021/12V, Version 2.0 (from June-26, 2018 change to Version 2.0, Version 1.0 we used a relay as a ON/OFF switch, version 2.0 changed to Ultra low impedance MOSFETs). Mount type: panel mount. Suitable battery: 12V. Rated current: 30A. Datasheet: https://images-na.ssl-images-amazon.com/images/I/81mTLi3gbZL.pdf