MRI-4021 / MRI-4021-ISO Photoelectric Smoke & Heat Sensor
The MRI-4021 / MRI-4021-ISO is a photoelectric and heat sensor that monitors the environment for early fire detection. It meets UL 268 7th edition and CAN/ULC S529 Rev 4 standards.
- The description claims that it meets UL 268 7th edition and CAN/ULC S529 Rev 4 standards.
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