infra-red

the infra-red remote control changed the channel.

infra-red cameras are used for night vision.

we use an infra-red thermometer to check for fever.

the security system uses infra-red sensors.

infra-red heating provides a comfortable warmth.

infra-red technology is used in many devices.

the infra-red mouse connected to the computer.

infra-red communication is a wireless method.

we detected movement with the infra-red motion sensor.

the infra-red light emitted from the device.

infra-red spectroscopy analyzes molecular vibrations.

the infra-red counter detected the passing cars.