Photocells
Fisher Pierce
Haromarkt/Incatron North
Horstmann
Hy-Lite Controls
Royce Thompson Electrical
SELC
Sirebeck
Zodion (Fisher Karpark/Cableform)
Unknowns
Specials
SS3
Calibrated to 55 LUX; interestingly this cell is fitted with an SS6's circuit board.
