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  • Versatile mounting – Mount the MM Series on a shelf, wall, or even upside down.
  • Fan cooled – The MM Series is fan cooled, enabling the unit to work well in confined spaces. If the inverter does exceed its temperature limits, it will automatically shut down and then restart when it cools down.
  • Low battery protection – If your battery voltage goes below the cut-out setting the MM Series will automatically shut down, saving your batteries.
  • High battery protection – If your battery voltage reaches over the cut-out setting the MM Series will shut down.
  • Current overload protection – The MM Series will automatically shut down if its output wattage is exceeded or it detects a short in the wiring, saving the unit from costly damage.
  • Convenient switches – The MM Series comes with an on/off front-mounted switch with an easy-to-read LED indicator.
  • Circuit breaker protection – Every model comes with built in input and output circuit breakers for ease of installation.
  • Battery temp sensor – The standard battery temp sensor monitors temperatures from 0 - 50° C.
  • Buy with ease – The MM Series is backed by a two-year (24-month) parts and labor warranty.

Model Numbers

  • MM612 (Inverter Only)
  • MM1212


Input battery voltage range 9 to 16 VDC 9 to 16 VDC
Nominal AC output voltage 120 VAC ± 5% 120 VAC ± 5%
Output frequency and accuracy 60 Hz ± 0.1 Hz 60 Hz ± 0.1 Hz
1 msec surge current (amps AC) 27 42
100 msec surge current (amps AC) 11 23
5 sec surge power (real watts) 1100 2100
10 sec surge power (real watts) 1050 1900
30 sec surge power (real watts) 1000 1750
5 min surge power (real watts) 950 1450
30 min surge power (real watts) 675 1375
Continuous power output at 25° C (with 1.0 PF) 600 VA 1200 VA
Continuous current output 5 AAC 10 AAC
Maximum continuous input current 80 ADC 160 ADC
Inverter efficiency (peak) 95% 95%
Transfer time 16 msecs 16 msecs
Search mode (typical) 3 watts 5 watts
No load (120 VAC output, typical) 10 watts 18 watts
Waveform Modified Sine Wave Modified Sine Wave
Continuous output at 25° C NA 70 ADC
Charger efficiency NA 88%
Power factor NA > .95
Input current at rated output (AC amps) NA 9
Transfer relay capability 20 AAC (input current for charging and pass through)
Battery temperature compensation Yes, on models with chargers: 15 ft Battery Temp Sensor standard
Internal cooling 0 to 59 cfm variable speed
Overcurrent protection Yes, with two overlapping circuits
Overtemperature protection Yes, on transformer and MOSFETS
On/Off with status indicator Yes, front mounted and easily accessible
Low battery cutout 10 VDC, adjustable on most models with the ME-RC remote
AC output/AC input Hardwire
Output circuit breaker/Input circuit breaker 7A/8AAC 15A/20AAC
Listings ETL Listed to UL/cUL458, CSA C22.2 #107.1-01
Warranty Two years
Temperature (Operating/Non-operating) -20° C to +60° C (-4° F to 140° F) to -40° C to +70° C (-40° F to 158° F)
Operating humidity 0 to 95% RH non-condensing
Dimensions (l x w x h) 16.6” x 8.4” x 4.7” (42 cm x 21 cm x 12 cm)
Mounting Shelf (top or bottom up) or bulkhead (vents up)
Weight 14 lb (6.4 kg) 20 lb (9 kg)
Shipping weight 18 lb (8.2 kg) 23 lb (10.5 kg)
Max operating altitude 15,000’ (4570 m)  
Construction ABS plastic top and cast aluminum bottom
  • Marine Systems
  • RV Systems