AC to DC Power Adapter & Battery Charger without AC Power Cable for the New DSP Family of Signal Level Meters. This is a standard AC to DC power supply (Input: 90 - 220 VAC, Output 15 VDC, 3.3 Amp). Can be used to replace the AC to DC adapter & battery charger that is included with the following products: 180 DSP, 360 DSP, 720 DSP & 1G DSP.