Hytera PS22002 is an external power supply, 220W, backup power supply battery applicable. This external power supply works with the following Hytera DMR mobile radio: HM782. This external power supply works with the following Hytera repeater: HR1062, RD982i. RD982i-S. This external power supply works with the following Hytera digital radio: MD612i, MD622i, MD782i. One year manufacturer's warranty.