Bosch 8/16 Zone Plug On Expander (CM707B) – suits CM705B only

The CM707B Plug On Zone Expander is designed to
complement the CM705B Universal Zone Expander. It
can be added via the expansion port on the CM705B
Universal Expander to provide an additional 8 hard
wired zone inputs, bringing the CM705B to 16 hard
wired zone inputs for Alarm + Tamper, 4 state
monitoring or Single EOL configurations.