6 | PRM-7000 / 8000 / 9000 Users Guide
2. Controls, Indicators and Connections
PRM-7000 / 8000 / 9000
A 2-Line by 14-Character Backlit LCD
B Radioactive Event LED Indicator
C Back Key
D External Audio and Data Jack
E External DC Power Input Jack
F Up Key
G Down Key
H Sound Port
I Select/Power On Key
J Geiger-Müller Pancake Tube Window (PRM-9000 Only)
K Geiger-Müller Tube Gamma Detection Center Point
(Crosshair Printed on Bottom of PRM-7000 / 8000 Only)
L Geiger-Müller Tube Alpha Detection Window (PRM-8000 Only)