[G] defines the volts / user unit, for example, μV/W/m2. WXT reports the voltage at solar radiation input multiplied with gain [G].
For example, if the solar radiation sensor has sensitivity 5 μV/W/m2 and you set the gain [G] to 1/ μV = 200 000, the solar radiation value reported by WXT is in W/m2. WXT reports the value always with six decimals.
The range: 0.000 000 001 … 1 000 000
Parameter selection [aIU,R= bit 3 and bit 11]
The bits enable normal and composite messages. You can select the parameters with the aIU command.