The EP215 System Hold Off / Abort switch connects to the EP203 Automatic Extinguisher Panel (3 + 1 zone panel) and is used to either delay, or cancel the extinguishant release sequence.
The first EP215 connects to the relevant connector block at the EP203 panel (either hold or abort terminals), via a 2-wire connection. The remaining EP215 units are then daisy-chained. A 470R resistor (supplied with EP215 accessories) must be fitted in every EP215 and a 6k8 end-of-line resistor (supplied with EP203 accessories) must be fitted in the last EP215 to allow the wiring to be line monitored for open and short-circuit faults.
