... safety lighting and indicator lamp. Model and its meaning (JMB,BJZ,DG,BZ and DM light control transformer) Technical character (JMB,BJZ,DG,BZ and DM light control transformer) The primary and secondary ... to maintaining to ensure the transformer’s service life. Specification and installation size(JMB) (JMB,BJZ,DG,BZ and DM light control transformer) JMB,BJZ,DG,BZ and DM light control transformer