An addressable loop-powered wall beacon, with a high intensity LED and a custom designed free-form optic which produces a highly visible flash. Coverage includes 5, 5.5 and 7 sqm*2. The unit is designed to fit the YBN-R/3, YBN-R/3(SCI) or the YBO-BS base sounder and is available with an ivory, white or red casing with red or white LEDs.