+GF+ Signet
9950: Module-Conductivity Accessory
Direct Conductivity/Resistivity Module. The Direct Conductivity/Resistivity Module interfaces Signet 2819-2823 and 2839-2842 Conductivity electrodes directly to the 9900.
9950: Relay Accessory
Relay Module.This module adds two programmable dry-contact relays to the standard Open Collector output in the base unit.