last gasp (LG)

An asynchronous message from an electricity meter that indicates the meter has lost power. Also known as a power out message. Last gasps can result when the loss-of-power PIN becomes active, when zero crossing events are missed, or when a transition from utility power to battery power occurs. There is no guarantee that a last gasp will be received by any other device in the network. Also known as standard last gasp (SLG). See also extended last gasp.