The ARCspectro ANIR lamellar Fourier transform spectrometer, covering the full range from the visible to the near-IR with 8 cm–1 resolution, integrates active laser position control for self-calibration. The spectrometer is fibre-based, USB-powered and portable. Features include a signal-to-noise ratio of 1000:10,000, a wavelength range from 900 to 2600 nm, and variable gain and resolution. It also delivers a wavelength accuracy of <0.5 nm and a minimum scan time of 1 s. Operating temperature ranges from 10 to 30 °C. Applications include gas detection, environmental monitoring, security, laser characterization, materials identification and process control.