Sierra Sensor

The room, read continuously.

PIR occupancy, ambient lux, and low-threshold audio. Three signals, one silent ceiling button.

Configure
The Sierra sensor, a low-profile flush-mount ceiling unit

1,000 ft² coverage · 9 ft ceiling

Three signals

Quiet intelligence, overhead.

PIR presence

360° field of view, ceiling-mounted, covering up to 1,000 ft². Tuned for seated occupancy, not just motion.

Ambient lux

An integrated photocell drives daylight harvesting through the Olympus. Tell a room how bright to stay, and it trims the artificial light to match the daylight.

Acoustic cue

A whispered word, a late-night step. Thresholded, never recorded.

Specs

Sierra at a glance.

SKU
CYN-SEN-S1
Detection
Passive infrared (360° field of view) · integrated audio presence sensing · integrated ambient light sensor
Coverage
Up to 1,000 ft² (ceiling mount, 8–12 ft height)
Modes
Occupancy (auto-ON / auto-OFF) · Vacancy (manual-ON / auto-OFF)
Audio
Presence threshold only — no recording, no network audio
Input power
12 VDC Class 2 (SELV) via Cat5e from the Olympus Room Controller
Consumption
< 2W typical
Connection
RJ45 Cat5e (T568B) · CAN Bus
Adjustability
360° body rotation for aiming after installation
Mounting
Flush / recessed ceiling mount with integrated spring clips (drywall or ceiling-tile cutout). J-box mounting via accessory bracket.
Trim diameter
3.82″ (96.95 mm) visible ring; 1.96″ (49.80 mm) lens aperture
Recessed depth
2.91″ (74.0 mm) overall; 2.00″ (50.7 mm) above ceiling
Operating temp.
32°F to 104°F (0°C to 40°C), 0–90% RH non-condensing
Finish
White, low-profile, paintable cover
Energy code
Can be used toward IECC, ASHRAE 90.1 and Title 24 Part 6 occupancy/vacancy sensing, daylight harvesting and receptacle control requirements — confirm with the authority having jurisdiction
Listings
ETL (Intertek) & cETLus to ANSI/UL 916 · CSA C22.2 No. 205 — certification in progress. FCC Part 15. RoHS compliant.
Warranty
5 years limited — full terms

Values above are taken from specification sheet Rev 1.2, September 2026. The specification sheet governs where it and this page differ.

Documentation

The Sierra spec sheet.

CYN-SEN-S1 · Rev 1.2 · September 2026 · PDF · 5 pages

Download PDF English Français All downloads

Wiring diagrams

Single zone Two zone Dual power pack

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Next step

Pair Sierra with a room.

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