HQRP 40A Solar Panel Energy Controller/Regulator 40 Amp 12V / 24V w/PWM Charge Mode Plus UV Meter HQRP&reg; Solar Charge Controller plus HQRP&reg; UV Chain / UV Health Meter; Rated charge current: 40A; Rated load current: 40A; System voltage: 12V/24V Auto; Promote charging voltage: 14.6V; Straight charging voltage: 14.4V; Floating charging: 13.6V; Overcharge return voltage: 13.2V; Over discharge voltage: 12.6V; Over discharge return voltage: 12.6V; Control mode: PWM (Pulse Width Modulation); 200 days warranty!