H.E Technical Services are Carrum Downs-based providers of operating lights, multiple light heads, medical lighting and surgical lighting systems. They provide Mach 500 F/DF Theatre Lamps to customers in Australia. Mach 500 F/DF Operating Theatre Lamps from H E Technical come with five reflectors. These theatre lamps work with the merging of luminous fields. The model Mach 500 F theatre lamps offer the additional feature of focusing. These operating theatre lamps have a light intensity (lux) of 140.000 for Mach 500 F and 160.000 for Mach 500 DF. They have a colour rendering index R (a) general of 96 and a colour rendering index R (9) red of more than or equal to 90. The focusable light-field size (mm) is 170-280 for Mach 500 F and 100-350 for Mach 500 DF. These operation theatre lights from H E Technical have colour temperature (Kelvin) 4300, while their option of electronic light intensity control at lamp head is optional. The photometric radiation of these operation lamps is equivalent at 100.000 lux 389 W/m² and temperature increase in head area is 2°C. The power consumption of these theatre lamps is 269 VA and mains supply is 22, 8 V / 50-60 Hz. These lamps come with Halogen 22,8 and 24V 50W 5 bulbs, while the working distance for these operation lamps in mm is 700-1400 for Mach 500 F and it is 600-1500 for Mach 500 DF. The height adjustment is adjusted up to 1180 mm.