... , please leave me message(about input voltage, output voltage, output frequency and socket type.)1. Input voltage: DC 12V / 24V / ... ),2. Output voltage: AC110V / 220V / 230V / 240V (optional),3. Output frequency: 50Hz or 60Hz (optional),4. Socket type: we can according ... rate. bacause our products boast of to-quality workmanship.In fact,they carry international quality approvals such as UL CE TUV ROHS ...