This is not a standalone detector but an addressable monitor module for the Velociti series, designed to integrate into a larger commercial or institutional fire alarm panel rather than operating independently. The title specifies the Amm-2F model, indicating a specific monitoring function for addressable devices within that ecosystem.

In the product photo, look for the terminal block configuration and the specific Velociti series labeling to confirm it matches your existing panel architecture. This component fails if your system is not already set up for addressable monitoring, as it requires a compatible control panel to function.

The title explicitly states that a hub is required, which is a critical subscription or hardware dependency that distinguishes this from standalone units. It is certified to UL 217 10th Edition, ensuring it meets current safety standards for photoelectric detection.

Check the photo for the specific form factor and mounting bracket to ensure it fits your ceiling or wall space, and note that the device will not function without the separate YoLink hub, which is not included in this listing.

This is a testing tool, not a detector itself, specifically the SDi SOLO 330 aerosol dispenser. It is designed to simulate smoke conditions to verify that existing detectors are functioning correctly.

The photo shows a compact, handheld dispenser; verify that the nozzle size and aerosol type are compatible with the specific model of smoke detector you are testing, as some detectors may require different testing methods.

This listing is a six-pack of detectors powered by 10-year industrial lithium batteries, which eliminates the need for frequent battery replacements. The 'Smart Home Safety' designation implies connectivity features, though the specific protocol is not detailed in the title.

Look at the photo to confirm the physical size of the units and the battery compartment design, ensuring that the 10-year lithium battery is sealed and not user-replaceable, which is a key differentiator from standard 9V or AA battery models.

This is a Z-Wave Long Range signal sensor, specifically the ZEN55, designed to work with analog smoke and CO detectors. The title clarifies that it is for use with analog detectors only and requires a Z-Wave hub, which is sold separately.

The photo should show the sensor's form factor and the connection points for the analog detector; ensure that your existing detectors are analog and not digital, as this sensor will not function with digital models.

This is a hardwired photoelectric smoke alarm with a 9V backup battery, designed for interconnected systems. The title emphasizes the hardwired nature and the backup power source, which is crucial for maintaining operation during power outages.

Check the photo for the wiring terminals and the backup battery compartment to confirm that it matches your existing hardwired system and that the 9V battery is accessible for replacement.

This is a 9V battery-operated photoelectric smoke detector with a low-battery warning feature. The title highlights the ease of installation and the UL217 10th Edition certification, making it suitable for renters or those without hardwired systems.

Look at the photo to verify the battery compartment design and the location of the low-battery warning indicator, ensuring that the 9V battery is easily accessible and that the warning system is clearly visible.

This is a case of 12 SDI Smoke Centurion aerosol smoke detector testers, each weighing 2.6oz. It is a bulk packaging option for facilities that need to test multiple detectors regularly.

The photo shows the individual tester size and the case packaging; confirm that the 2.6oz size is manageable for your testing procedures and that the case of 12 fits your storage and usage needs.