Covers the electrical and mechanical interchangeability of nonlocking type photocontrols for mounting within a roadway or off-roadway luminaire, herein called 'controls.' These controls are commonly called 'button' photocontrols.
Covers the electrical and mechanical interchangeability of nonlocking type photocontrols for mounting within a roadway or off-roadway luminaire, herein called 'controls.' These controls are commonly called 'button' photocontrols.