When not using water quality meter/electric conductivity meter, plug electrode closing plug in installation hole of water quality meter and electric conductivity meter of G-5D・10D・20C.
Water quality meter(RG-8A) will light green if water quality is good, and poor water quality will light red.
Specifications
RG-8A (water quality Indicator lamp)
Size (mm): Electrode unit outer diameter/φ30 x 72.5
Power supply: 100VAC 50/60Hz (included)
Alarm settings: Less than 1μs/cm/green color lighting, 1μs/cm or more/red color 1 time flashing, 2μs/cm or more/red color 2 time flashing