KNACRO LM7812 + LM7912 Dual Voltage Regulator Three-terminal regulator power supply module 12V Dual Voltage Regulator with rectifier bridge Dual Voltage Regulatorthree-terminal regulator power supply module. This module can be output: 12V, dual voltage. Input voltage range: DC 15 ~ 24V, positive and negative dual voltage. AC 12 ~ 24V, positive and negative dual voltage. Dual output voltage, must enter the positive and negative dual voltage. Applications: DIY power supply, monitor power supply, laboratory power supply, camera power supply, automotive power, communications equipment power supply, etc