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ID = 43830
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Tube type:  SEMICONDUCTOR, general 
Identical to CK1122

Description Four-terminal optoelectronic coupler, forerunner of optocouplers, containing one incandescent lamp and one photoresistor in a 4-pin crystal can case. Also known as Raysistor it was used in a variety of control circuits.
Control lamp: 0-10V ac or dc, 0-17mA
Photoresistor: 1000 ohms to 10 megaohms, 200V max, 100mW
20ms on, 250ms off. 
Information source - - Manufacturers Literature   

raysistor_xcan_1.png CK1122: Manufacturer's Literature
Emilio Ciardiello

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