This is a 3V fixed-voltage MyVolts-branded in-car power adapter designed to meet exactly the power specification of your Sony AC-E30HG, AC-E30A PSU part. Specifications: - Output voltage is 3V - Max output amperage is correct for your device - Output tip is the right size and specification - we've tested it thoroughly - Cigarette lighter plug - suitable for 12V or 24V vehicles - cars, campervans, and caravans - Input voltage is 12V DC - 24V DC In addition, this myVolts-branded replacement power supply for Sony AC-E30HG, AC-E30A PSU part is: - Compliant with all safety standards, and features overvoltage, overcurrent and short-circuit protection to protect your device from damage - Energy Star level 6 approved, guaranteeing more efficient delivery of power to your devices, at less cost to you - RoHS and CE-certified - Covered by a 2 years' warranty: if the power adapter fails within 2 years from purchase, we'll replace it, no worries.