... Warranty:1year 10 years experience CE FCC ISO9001:2008 Application: BK(DK) Series control transformer(Hereafter call transformer) is suitable ... lamps power supply.Structure Character: According to different structures, BK transformer belongs to shell type, and according to the installation ... mode, it belongs to vertical type. Model Means: BK-x DK-x B:Transformer D: Single Phase K: Control ...