Hamamatsu’s TF series C14486GA miniature NIR spectrometer has an InGaAs linear image sensor providing a wavelength range of 950–1700 nm. It is powered via a USB cable and so does not need an external power supply, weighs 88 g and has dimensions of 80 × 60 × 12 mm. The TF series incorporate a polychromator in a compact, thin case that houses the optical elements, image sensor and driver circuit. Light input is via a fibre-optic connection.