SITERLINK Smoke Detectors Battery Operated, Smoke Alarm with Test-Silence Button, Photoelectric Sensor Fire Alarms Smoke Detectors with LED Lights, UL Listed Fire Alarm for House, GS528A, 1 Pack - Amazon.com
Edwards EST (SIGA-PD) Photoelectric Smoke Detector
Kidde Pro Series Hardwire Photoelectric Smoke Alarm with Battery Backup | The Home Depot Canada