These meters comply to IEC SANS 600790:2000 & IEC SANS 60079-11:1999,
which is applicable for electrical apparatus for explosive gas atmospheres.
Part 0 (general requirements) & part 1 (intrinsic). The approved explosive protection
rating of this equipment is suitable for use in Zone 1 hazardous area.
Group I (coal mines) underground & Group II (surface).
Intrinsically Safe TRUE RMS Digital Multimeter With PC Interface