Package includes:

1x DR-400 DC coupler, power connector for Canon Adapter ACK-E2 Kit.

Description:

This DC coupler is like a fake battery replace Canon battery BP-511/511A/512/513/514, it should use together with a power adapter, to composed the adapter kit ACK-E2, or you can use it with another DC power souce, such as power bank (suggested output 7.8V). It works wonderfully for Canon:
EOS 10D
EOS 20D
EOS 20D EF-S 18-55mm Kit
EOS 20Da
EOS 30D
EOS 30D EF-S 18-55mm Kit
EOS 40D
EOS 40D EF 28-135mm IS Kit
EOS 5D
EOS 5D EF 24-105mm Kit
EOS 50D
EOS 50D EF 28-135mm IS Kit
EOS D30
EOS D60
EOS Digital Rebel
Limited Edition Digital Rebel
Limited Edition Digital Rebel kit 18-55mm Kit
and more models.