Our 12-13-14V-AC transformers are specially designed to power pool and spa lights. In order to guarantee a safe installation, our transformers are made up of 2 compartments which make the connections of the primary and the secondary independent. All of our transformers are equipped with an ON / OFF switch to facilitate turning on the lights, a resettable circuit breaker to protect the transformer and lights in case of overload and quick connectors for easy electrical connection.