90 CG   valve  Light sensitive photo cell  PAIR

Category

Photoresistors (LDR)

Store

eBay

Brand

mullard

Mullard describe the 90CG as a gas filled photo cell, most sensitive to incandescent light sources and to infra-red radiation. Caesium on oxidised silver is the active material and the cathode effective are a is 3 sq cm.

26.72 GBP