What is an SR7 AVR?
A Mecc Alte SR7 is an Automatic Voltage Regulator. This AVR was used on a wide range of Mecc Alte's smaller Alternators over many years. This analogue AVR stopped being used as widely when Mecc Alte made the switch to their new digital AVR's.
What does the SR7 AVR look like?
The SR7 AVR is pictured below. The SR7 AVR pictured below is 100% genuine. Using a fake AVR is not advisable. This can be very damaging to the Alternator itself and drastically reduce the life of the product.