Hydrolyzes p-nitrophenyl beta-D-glucoside, p-nitrophenyl beta-D-mannoside, p-nitrophenyl beta-D-galactoside, p-nitrophenyl beta-D-xyloside, p-nitrophenyl beta-D-fucoside, p-nitrophenyl beta-L-arabinoside, oligosaccharides, pyridoxine beta-D-glucoside and the cyanogenic glucosides amygdalin, prunasin and dhurrin. Possesses pyridoxine transglucosylation activity. Hydrolysis of terminal, non-reducing beta-D-glucosyl residues with release of beta-D-glucose. Homodimer. Belongs to the glycosyl hydrolase 1 family.