ActronAir Temperature Sensor "Bead" 2-Wire 6m is a general-purpose NTC bead temperature sensor for ActronAir residential ducted systems, providing ambient or return air temperature data to the indoor PCB via a 6-metre 2-wire cable for use in applications where the controller or PCB is located away from the sensing position. The bead element format provides faster thermal response than encapsulated sensors, making this type suitable for applications where rapid temperature changes need to be detected. Isolate power at mains before replacing any temperature sensing components.