If you're looking for that one kit to wire your entire dollhouse, the CK100 Deluxe Wiring Kit is the answer. This high-powered kit contains all the basic items included in the Large House Kit, plus a larger 40 watt transformer, and provides a substantial cost savings for those wishing to equip their dollhouse with working outlets and plugs. Its triple quantity of tape will wire a 12 to 15-room dollhouse and the powerful 40-watt transformer will light up to 64 12-volt or 100 16-volt bulbs. The CK204 tester makes easy work of all electrical testing. In addition, eight of our popular plugs and outlets are included in each kit for that final touch of realism. As for economy the CK100 kit provides a 15 to 20% savings over the purchase of parts on an individual basis. It's a great buy and a great name; Cir-Kit Concepts!