Owner's manual

ADS Environmental Services ADS Spider User Manual
Page 109
NOTE: If you are using an optional external rechargeable battery,
simply connect the battery across the same terminals. Observe the
correct polarity (+ terminal is on the left when viewing the unit as
shown in the illustration).
Attach the supplied SDI-12 connector to your sensor cable, as shown
in the following image:
Plug the sensor cable into the Spider’s SDI-12 interface.