Spectrum Detector has released a family of USB-powered, digital energy meters that feature single and two channel LabView Applications Software for laser energy measurements and experiments. The SPJ-D-8 / SPJ-D-8OB include models based on pyroelectric detectors for sources in the 0.1 to 100μm region and extremely sensitive models that include Silicon and Germanium Detectors for measurements down to the femtojoule range from 0.2 to 1.8μm. A modular design allows the user to interchange the detector module with the digital backend and optical front end. All Joulemeter products feature NIST traceable calibration.