# Emisar / Noctigon KR1AA This is the same as the [D3AA](../emisar-d3aa) driver, but with the following changes: - Increased the time before measuring battery strength, to give the user more time to tighten the tailcap first. The host has a reputation for being difficult to tighten quickly enough to get a strong connection. - Tweaked the ramp shape slightly to eliminate a "gear change" zig-zag which seems to occur on KR1AA but not D3AA.