EOI provides the largest selection of extended area sources in the industry, including the highest temperature (800 ºC) and the highest emissivity (0.992) and best stability (±0.001 ºC). Standard sizes range from 2" to 30". Temperature ranges start at -60 ºC at the low end and go to 800 ºC at the high end.

Model	Temperature Range	Emitting Area Range (square)
LES100	5 °C to 95 °C	2" to 12"
CES100	0 °C to 100 °C *	2" to 24"
CES100CFC	-40 °C to 80 °C **	2" to 24"
CES200	0 °C to 200 °C *	2" to 24"
CES200CFC	-30 °C to 180 °C **	2" to 24"
CES375	50 °C to 375 °C	6" to 12"
CES600	50 °C to 600 °C	2" to 30"
LES600	50 °C to 600 °C	2" to 30"
CES800	50 °C to 800 °C	2" to 14"
LES800	50 °C to 800 °C	2" to 14"