Model Number: TTN-1220W-#2619 Brand Name: TTN Key Specifications/Special Features: MODELTTN1220WTTN1220W-MInput charging voltageVoltage of solar panel≤25v/ac charger 15-16VMax charging current6A6ARated output voltage9A9ACurrent value for overload protect12ATime for restartAuomatic release after 30S or turn off the power switch derectlyOutput current for USB1AVoltage point for over-discharge protection11.0VVoltage point for over voltage recovery12.6VVoltage for float charge13.8VOver voltage value for protection15.5VCharging modePWM availableAudio format avaiable-MP3Frequency range of the radio-FM88-108MHZPower of load speaker-4Ω-3WInput port-SD card, USBWorking temperature-25℃--+60℃Dimension180*81*209(mm)New weight5.3kg MODELTTN1220WTTN1220W-M Input charging voltage Voltage of solar panel≤25v/ac charger 15-16V Max charging current 6A 6A Rated output voltage 9A 9A Current value for overload protect 12A Time for restart Auomatic release after 30S or turn off the power switch derectly Output current for USB 1A Voltage point for over-discharge protection 11.0V Voltage point for over voltage recovery 12.6V Voltage for float charge 13.8V Over voltage value for protection 15.5V Charging mode PWM available Audio format avaiable - MP3 Frequency range of the radio - FM88-108MHZ Power of load speaker - 4Ω-3W Input port - SD card, USB Working temperature -25℃--+60℃ Dimension 180*81*209(mm) New weight 5.3kg