This is a T57170 "C" Frame that is equipped with a battery powered pump with a hand held remote control instead of a manual pump. A flow restriction valve has also been provided to limit the speed when lowering a load. The pump uses an 18 Volt lithium ion battery and a battery charging station.
This can also be added to an existing "C" Frame as a T57170BPCK Battery Powered Conversion Kit and this kit comes with a protective aluminum mounting bracket.