I am trying to mrtg ups.
system ups print oid

model=.1.3.6.1.2.1.33.1.1.2 version=.1.3.6.1.2.1.33.1.1.3
status=.1.3.6.1.2.1.33.1.2.1 remaining=.1.3.6.1.2.1.33.1.2.3
battery-charge=.1.3.6.1.2.1.33.1.2.4 voltage=.1.3.6.1.2.1.33.1.2.5
temperature=.1.3.6.1.2.1.33.1.2.7
replace-battery=.1.3.6.1.2.1.33.1.6.2.1.2.1
low-battery=.1.3.6.1.2.1.33.1.6.2.1.2.2
overload=.1.3.6.1.2.1.33.1.6.2.1.2.3
line-voltage=.1.3.6.1.2.1.33.1.3.3.1.3.2
frequency=.1.3.6.1.2.1.33.1.3.3.1.2.2
output-voltage=.1.3.6.1.2.1.33.1.4.4.1.2.2
load=.1.3.6.1.2.1.33.1.4.4.1.5.2


for: voltage, temperature, frequency I am receiving "There is no such variable name in this MIB"
output-voltage and line-voltage working fine.
Does someone have similar experience?