I need a replacement fuse

I need to replace the fuse in my RACO autodialer. What kind does it use?

AlarmAgent  no fuses used
 Catalyst  3amp 2AG fuse
 UL/CSA versions: 1.5amp 2 AG fuse
 Chatterbox  MR5 and below main board: 1/4amp 3AG fuse
 MR7 main board : 3amp 2AG fuse
 12vdc operation: 1amp fuse
 Guard-It  GU7 main board: 0.8amp 3AG slo-blo fuses for power and phone line
 GU8 main board: 3amp 2AG fuse
 Responder  1/4amp 3AG fuse
 Verbatim / Verbatim Gateway  VMP5 and below main board: 1/4amp 3AG fuse              
 VMP6 and above main board: 3amp 2AG fuse
 UL/CSA versions do not use a fuse