Morningstar EcoPulse Solar Controller with Meter High Reliability – conformally coated circuit board and corrosion resistant terminals. Robust Thermal Design – extruded aluminum heatsink dissipates heat quickly without using cooling fans. Durable Casing – high strength polycarbonate case. LED Fault Indications – alert when short circuit, over current, high voltage, and other error conditions take place. Automatic Solar Based Lighting Control – field adjustable dusk ‘til dawn setting. Adjustable Charge Settings – seven presets and a custom setting can be set via DIP Switches or by the meter display buttons. Adjustable Load Control – load control can be adjusted via meter display. Optional Meter – multi-lingual interface with scroll buttons to adjust the settings and display metrics. Specifications SR-EC-10M SR-EC-20M SR-EC-30M Voltage Accuracy <= 0.1% +/- 50mV Maximum PV open-circuit voltage 60V Self-Consumption <15mA; <20mA (meter) LED Indications (1) status, (3) Battery state of charge Operating Temperature -40°C to + 45°C Storage Temperature -40°C to + 80°C Humidity 100% non-condensing Enclosure IP20, Type 1 Solar Input overload, short-circuit, high voltage, reverse polarity, high temperature, nighttime reverse current Battery reverse polarity (no battery removal) 4-Stage charging Bulk, Absorption, Float, Equalize Set-points Absorption, Float, Equalize, HVD Low Voltage Disconnect, Low Voltage Reconnect Settings 11.4 V / 12.6 V or Custom (x2 for 24 volt systems) Lighting Settings Dusk to Dawn CE, TUV Listed IEC 62109 Meter Resolution 128 x 64 pixels Viewing Area 5.0cm x 2.5cm Interactive Yes Part Number Load Current Rating Weight W x L x D Battery Voltage Range Nominal Battery Voltage MOR-SR-EC10M 10 Amp 0.4 kg 15.3cm x 10.5cm x 5.5cm 10-35V 12V or 24V auto-detect MOR-SR-EC20M 20 Amp 0.4 kg 15.3cm x 10.5cm x 5.5cm 10-35V 12V or 24V auto-detect MOR-SR-EC30M 30 Amp 0.4 kg 15.3cm x 10.5cm x 5.5cm 10-35V 12V or 24V auto-detect