5 watt transformer - 12 volt. Size of unit is 1 15/16 " x 2 34" x 1 9/16". This transformer powers up to 10, 12 volt bulbs. Be sure to count the number of bulbs in your house, not the number of lights. These plug-in transformers provide a safe and convenient AC power
source for any dollhouse or miniature room. All Cir-Kit Concepts’
transformers are designed to plug directly into a powered outlet, thus
eliminating the need of building a special transformer enclosure within
the dollhouse.
The most popular versions contain a built-in thermal circuit breaker
making them virtually burn-out proof. In the event of an overload or
short, the thermal breaker simply opens and removes voltage until the
unit cools. After cooling, the breaker resets itself and automatically
reapplies voltage to the output.
U.S./Canadian Transformers
These transformers have straight blade pins and are designed primarily
for the U.S., Canada, and Mexico,
as well as certain other countries, such as Japan.