Fluke 233 - Manual (Page 9)

True-rms Remote Display Digital Multimeter
Features
7
Table 2. Display (cont.)
No. Symbol Indication
4  Radio connection indicator.
5
° C, ° F degrees Celsius, degrees Fahrenheit
6 A amperes (amps)
V, mV volts, millivolts
μ F, nF microfarad, nanofarad
DC AC Direct current or alternating current.
Ω , M Ω , k Ω ohm, megohm, kilohm
Hz, kHz hertz, kilohertz
7 remote  Battery low warning for the display module.
8 Manual Range Manual range set.
9 Auto Range Auto range set.
10 meter  Battery low warning for Meter base.
11  Diode test mode.
12  Continuity test.
13  Input is a negative value.
14  X Hazardous voltage. Measured input voltage ≥ 30 V, or voltage overload condition (OL). For
frequency measurements >1 kHz, the  symbol and high-voltage LED is unspecified.