The ProMaster Unplugged m600 Monolight is a high-powered, wireless strobe that gives you the freedom to light a subject just about anywhere. The m600's controls are straightforward and reliable. Turn the audible alarm and LED modeling light on or off depending on your surroundings and needs. If you decide to run the m600 on AC power in a studio setting, an optional AC Adapter Kit is available for purchase (product 6852). You can expand on the m600's wireless firing system by adding Unplugged mReceivers (product 6719) to fire other types of strobe lights and speedlights too!