The AS440 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR). The AS440 incorporates Surface Mount Technology (SMT) to its design.
The AS440 is supplied as standard to the STAMFORD S4 and STAMFORD HC5 alternators and is an option for the STAMFORD UC22 and UC27 alternators. Ensure your AS440 is genuine by buying it from an authorised STAMFORD
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