The Esser 807214RR is a dedicated optical signaling device (Beacon-only) designed for the esserbus-PLus loop. Unlike combined units, this model focuses exclusively on high-intensity visual notification, making it ideal for environments where acoustic alarms are either insufficient (high-noise industrial areas) or undesirable (quiet zones). The “RR” designation indicates a Red housing and a Red flash. It is fully loop-powered and synchronized, ensuring all beacons on the circuit flash in unison to comply with safety standards and prevent disorientation. With its integrated short-circuit isolator, the device ensures that a single wiring fault won’t compromise the entire notification loop.