JOB Thermo Bulb Links can be used in virtually any area where a thermally activated self-triggering mechanism is required in the event of a fire. The Thermo Bulb Links are used for example in: kitchen extractor hoods, fire dampers, smoke vents, ventilation ducts,to activate water, foam, dry powder, CO2, or other gaseous fire extinguishing devices, to trigger devices for opening or closing windows, doors, roof hatches, hatches, machine- and belt stops and the triggering of special alarm or evacuation devices.