• Heavy-duty DC-to-AC, PWM sine wave inverter with automatic line-to-battery transfer and integrated charging system
• Functions as an extended-run UPS, a standalone power source or an automotive inverter
• 2000 watts continuous, 3000 watts OverPower™ and 4000 watts DoubleBoost™ inverter output
• 12V DC or 120V AC input; 120V, 60 Hz output (hardwired)
• 3-stage battery charger with user-selectable 25/100 amp, wet/dry cell operation
• Built-in Isobar® premium AC surge protection
• Unlimited back up time with user supplied batteries

The MRV2012UL is a heavy-duty, DC-to-AC inverter with automatic line-to-battery transfer and integrated charging system that serves as an extended-run UPS, a standalone power source or an automotive inverter suitable for recreational applications.
Inverter
■ MRV2012UL serves as an automotive or stationary DC-to-AC inverter with automatic line-to-battery transfer and integrated battery charger
■ Supplies a 120V AC output from a 120V AC line power source or 12V DC battery source
■ 2000 watts continuous AC output in inverter mode, 3600 watts continuous AC output in AC line power mode Automatic Transfer
■ 16.6 millisecond automatic transfer between line and battery power supports UPS protection during blackouts and voltage fluctuations for equipment compatible with a one cycle transfer time Battery Charger
■ 3-stage battery charger with user-selectable 25/100 amp operation and adjustable settings for wet/gel battery types with charger on/off capability; offers fast, reliable battery recharging
■ Protected hardwire DC terminal posts safely accept heavy-gauge input wiring from attached battery bank
■ Protected hardwire output passes 120V line power or inverter output through to connected equipment
■ Extremely reliable large-transformer design tested to UL (USA & Canada) standards Overload / Overtemperature Protection
■ DoubleBoost inverter output supports momentary startup loads up to 200% of the continuous rating for up to 10 seconds
■ OverPower inverter output supports longer duration overloads to 150% for up to 60 minutes under ideal battery and temperature conditions. (For best results, utilize OverPower usage as short of a duration as possible, ensure battery bank and cabling is able to provide full nominal DC voltage under load and allow inverter/charger to fully cool before and after OverPower usage.)
■ Resettable 25A charger AC input breaker and variable-speed cooling fan protect the inverter from load- and temperature-related failures
■ Grounding lug properly connects the inverter/charger system to earth ground or vehicle grounding system
■ Automatic overload and thermal shutoff safely turns off inverter as excessive loads or overheating conditions develop Operating Modes / Display LEDs
■ 3-position operating mode switch supports "AUTO" mode to enable automatic transfer between DC and AC modes, CHARGE-ONLY to maintain a full battery charge when AC is present without auto transfer and SYSTEM OFF settings
■ Six front panel LEDs display AC/DC operational modes, overload status, DC voltage level, shutdown status and system fault status
■ 4 configuration dip-switches support wet/gel battery charging profiles, charger enable/disable capability, selectable 75/85/95/105V AC low voltage auto transfer points during brownout conditions
■ 4 additional configuration dip-switches support 4 levels of charger limiting relative to output load size, a battery equalization program and battery charger low/high settings Optional Features
■ Front panel connector enables remote off/on switching (requires optional APSRM4 remote control module, sold separately)
■ Load-sensing control dial enables adjustable load threshold required to automatically turn the inverter on and off in DC mode as load conditions change
■ Battery temperature sensor with 20-ft. (6.09 m) cable to prolong battery life by adjusting the charge level based on battery temperature
■ Ignition Switch Control Jack can be used to connect the Inverter to your vehicle's ignition switch in order to automatically control the Inverter.
■ Automatic Generator Starter jack enables user configuration of automatic generator startup as inverter batteries drop to 11.5V DC and generator shutoff as inverter batteries are recharged to 14.1V DC Construction
■ Moisture-resistant construction enables vehicular operation in high-humidity environments