A Sage Relay is a small module that converts a standard LED luminaire into an emergency-capable fixture powered by central battery. Sage offers six variants because different fixtures need different power outputs.
What a Sage Relay does
A Sage Relay sits inside (or beside) a standard LED luminaire. In normal operation, the luminaire runs from the building's AC power as usual. When AC power fails, the relay instantly switches the luminaire to a low-voltage DC feed from a central battery system, keeping the LEDs on at a controlled brightness for the required 90-minute emergency duration.
In industry terms the Sage Relay is an emergency lighting control device (ELC), UL 924 listed. It is not a bypass relay of the ELCU or ALCR class, which switch a normal lighting circuit onto emergency power ahead of the driver. The Sage Relay sits after the LED driver and powers the LED array directly from the central battery, so it works with any dimming or lighting control and keeps working if the driver fails.
Why six different variants
Different LED fixtures draw different amounts of normal-mode power and run at different driver output voltages. A Sage Relay must be matched to the host fixture, so the one Relay line ships in six variants (RLY-1 through RLY-6) covering the practical range:
- RLY-1 — Standard application · driver output to 41 V.
- RLY-2 — Standard application · driver output to 54 V.
- RLY-3 — Standard application · driver output to 54 V, J-box mount configuration.
- RLY-4 — High-bay application · driver output 21–126 V.
- RLY-5 — Standard application · driver output to 100 V.
- RLY-6 — High-bay application · driver output to 210 V.
Factory-installed vs. field-installed
Sage Luminaires (general lighting with optional Sage Relay) ship from the factory with the relay pre-installed and pre-wired — these arrive ready to connect to a central battery system. Standalone Sage Relay modules are available for retrofitting an existing third-party LED luminaire to operate with central battery emergency power.
How Relay selection works
Specifiers and agents do not self-select SR modules. Sage's engineering team picks the appropriate SR variant for each project opportunity based on the host fixture's normal-mode wattage, voltage, and the overall emergency-system architecture. The spec sheet documents the full SR range for reference; the final SR SKU lands in the submittal package Sage delivers with the project.