Your BlueDriver Multimeter runs on a 9V battery and has two fuses: 

  1. Fast Acting Ceramic or Glass 20A/250V
    6mm x 30mm
  2. Fast Acting Ceramic or Glass 1A/250V
    6mm x 30mm

    A note on fuses: Any fuse ranging from 22mm-32mm will fit as well.

To access the battery and fuses: 

  1. Place the multimeter face down
  2. Pull up to extend the stand
  3. Remove the two screws as shown
  4. Replace the battery or appropriate fuse