The ILT400 Belt Radiometer is equipped with a solid-state detector for excellent long term stability and reduced cost over traditional vacuum phototubes. The ILT400 all-in-one Belt Radiometer, comes in three versions: ILT400UVA measures UVA from 315 – 390 nm, and the ILT400BAV is designed for broadband covering 275 – 485 nm.

The ILT400 works with many UV lamp options from UV LEDs, Iron doped, H and D type UV lamps, as well as standard UV bulbs, but is not recommended for flashing or pulsed UV lamps.