Coralife Aqualight High Output T5 Dual Lamp Fixture dog spray remote trainer back door can be raised back door can be raised and lowered allowing pets to enter and exit the hutch freely when attached to the Multi Plex Play Yard Package Includes: 1 X Transmitter 1 X Receiver 1 X Adjustable Collar 2 Pairs of Test Probes 1 X Test Light 1 X English Manual 1 X Original Packing Aqualight High Output T5 Dual Lamp Fixtures come complete with two high output lamps Each high output lamp can provide approximately twice the light output of a traditional T8 lamp making these fixtures a great choice for saltwater aquariums and aquariums with live plants