The 277 is a plug compatible variation of the 276 with a single immobilizer circuit on board which can be used as a one circuit non self arming immobilizer with optional anti-carjack facility.
Typically used in a vehicle with OE immobilization that requires an alarm with anti carjack. A well priced product with a big market.
The 277 is a plug compatible variation of the 276 with a single immobilizer circuit on board