LED display Input voltage range: 145-290Vac Output voltage range: 200-255+/-5Vac Output frequency: 50¡À0.5Hz (DC Mode) Wave form: PWM (DC Mode) Transfer time: ¨Q10ms Capacity & quantity of battery: 1 pc*12V7Ah (2.0kg) Charging period: 10-16 hours Backup time: 3-20 minutes (1PC+15 inch CRT) Transformer size & material: 86*38 / Pure Aluminum Auto re-starts when AC recovers Silence setup Automatic charging (offline charging) Battery low voltage protection Overload & Short circuit protection. OEM packaging.
