ZRG, "The green Runner," from Z-Laser Optoelektronik GmbH is a diode-pumped, solid-state, passively cooled green laser measuring 40 × 332 mm and operating from 0 to 35 °C. It runs on a 95- to 265-VAC supply and is housed in a tightly sealed aluminum tube. Four models are available, all of which operate at 532 nm and have a mean time to failure of 10 h at −23 °C. The Z5RG has a 4-m line length and delivers 5 mW. The Z10RG, with an 8-m line length, delivers 10 mW. The 20-mW Z20RG has a 15-m line length, and the Z40RG, with a 20-m line length, outputs at 40 mW.