The PowerMap is the smallest four-band UV radiometer on the market. With a compact size of 5.5" x 2" and a 65-minute rechargeable battery, it is the ideal Radiometer for quick field jobs. EIT Radiometers provide a complete picture of the UV source, and how the UV is being delivered to the curing surface.The Radiometer is able to measure UV irradiance (W/cm2), total energy density (J/cm2), and UV irradiance as a function of time. As with all of EIT Profiling radiometers, the PowerMap can identify easily and quickly the following: Number of lamps and bulb type in each UV station Uniformity of UV across the bulb Performance of individual lamps even in multi-lamp systems Lamp focus and changes to it Process speed and/or exposure time variations System changes over time, which helps identify maintenance needs. Differences between UV systems. Please note: all EIT radiometers must be calibrated before shipping. This takes from 1 to 2 weeks on average. If you are in a hurry for this product, please give us a call and we will expedite this process. 1-800-977-7292