

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The Silent Knight 6815 is a signaling line circuit (SLC) expander designed for use with Honeywell Silent Knight 6820 and 6820EVS fire alarm control panels. This unit uses System Sensor protocol and provides the same functionality as the built-in SLC found in these panels.
This expander allows you to customize fire alarm systems for larger or more complex installations.
Thanks for subscribing!
This email has been registered!