This is the Futaba PS10 Step Down Regulator.

FEATURES: Allows the use of a 4.8V servo with a high-voltage (HV) 2.4GHz radio
            system
          Steps servo power down to 5.2V
          For use with 2.4GHz systems only
          One year limited warranty through Hobby Services beginning at date
            of purchase

INCLUDES: Futaba PS10 Step Down Regulator with Connectors and Instruction
            Sheet

REQUIRES: Installing between battery and HV compatible receiver or gyro (see
            COMMENTS)

SPECS:    Main Application: Power supply for 4.8V rated receiver and servos
          Input Voltage Range: 6.0 - 12.6V
          Output Voltage: 5.2V
          Rated Output Current: 7.0A (momentary maximum 13.0A)
          Operating Temperature Range: -10 to +45°C
          Storage Temperature Range: -20 to +60°C
          Dimensions: 1.4 x 0.81 x 0.39" (35.6 x 20.5 x 10mm)
          Weight: 0.52oz (14.9g)

COMMENTS: Do not connect between receiver and servo. The receiver may operate
            erroneously due to insufficient capacity and fail to control the
            model.
          If using a power switch, always connect switch between battery and
            PS-10
          If using multiple servos, care must be taken not to exceed 7A
            continuous current rating.

                                                                   kzh 02/21/12
                                                                         ir/jxs