Sofamel Castellano BVD-1500 Manual De Instrucciones página 27

2.2. Descriptions of keys
RCD Key
HOLD Key
Lighting Key
2.3. LCD Monitor
High voltage hazard indication
Battery undervoltage indication
Mute mode indicationt
Negative data
DC
AC
Continuity
Frequency Hz, Frequency KHz
Resistance value units: Ω、 KΩ、 MΩ
Positive phase sequence
Negative phase sequence
Data holding
Voltage unit: volts
27