VEVOR Convertidor de Onda Sinusoidal Pura DC a AC 220 V, Convertidor de Voltaje con Conmutación a La Red 80 A, Inversor de Onda Sinusoidal Pura de 1.200 W, Aparato Eléctrico IP65 con Tecnología MPPT
What voltage does this really work on - I have tried 24 Volt 280 W panels and I just get the red light constantly on. Is it really 12 volt or is it broken?