The Wahl Heat Spy high-speed 30-Hz, 160x120-pixel, thermal imaging cameras are available in two series with 16 different configurations to suit a variety of applications. The z30 series Detector is designed for on-the-spot maintenance inspections and repair. The Detector model features 11 languages; four color palettes; °C, °F, or K measurement scales; one hot, one cold, and two fixed spot measurements; and freeze frame for viewing the current image. The z50 series Inspector is designed for users to document and prepare reports with ease, including thermal and digital images. The z50 models feature all the functions of the z30, with an additional seven color palettes (total of 11), built-in emissivity table for easy lookup, measurement offset correction, digital camera, and image storage via SD card included. The digital camera included on the z50 Inspector series Heat Spy takes a digital image simultaneously with the thermal image. The Double Vision feature allows the user to place the corresponding images adjacent in a report. The z50 Inspector includes voice annotation up to 45 seconds per image; the user can record notes and observations in the field for transcription to the final report. The measurement mode includes lines, areas, and isotherms with visible alarms. All models have 2x digital zoom, 3.5-inch high-resolution display, laser aiming, audible and visible alarms, video output, spots, delta T, auto ranging, manual level and span, and adjustable display brightness.