CM420 - Security Camera FIRST ALERT - Free user manual and instructions
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| Product Type | Security Camera |
| Brand | First Alert |
| Model | CM420 |
| Dimensions (H x W x D) | 3.5 x 2.5 x 1.5 inches |
| Weight | 0.5 lbs |
| Power Source | AC adapter (5V/2A) |
| Video Resolution | 1080p Full HD |
| Field of View | 120 degrees |
| Night Vision | Up to 30 ft with IR LEDs |
| Motion Detection | Yes, with adjustable sensitivity |
| Two-Way Audio | Yes, built-in microphone and speaker |
| Connectivity | Wi-Fi 802.11 b/g/n (2.4 GHz) |
| Storage Options | MicroSD card (up to 128 GB) or cloud subscription |
| Mounting Type | Desktop or wall mountable |
| Weather Resistance | Indoor use only |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) |
| Cleaning and Maintenance | Wipe with dry cloth; avoid liquids |
| Safety Certifications | FCC, UL listed |
| Spare Parts Availability | AC adapter, mounting screws, and replacement cables available |
| Repairability | User replaceable microSD card; other repairs by qualified technician |
| General Information | Works with First Alert app (iOS/Android); requires 2.4 GHz Wi-Fi |
Frequently Asked Questions - CM420 FIRST ALERT
How do I reset the First Alert CM420 camera?
Press and hold the reset button (located on the back of the camera) for 10 seconds until you hear a confirmation tone. This will restore factory defaults.
What type of microSD card is supported?
The camera supports microSD cards up to 128 GB with Class 10 or higher for reliable recording.
Can I use the camera without Wi-Fi?
No, the camera requires a 2.4 GHz Wi-Fi connection for setup and remote access. It does not support Ethernet or cellular.
How do I set up the camera?
Download the First Alert app, create an account, plug in the camera, and follow the in-app instructions to connect to your Wi-Fi network.
What should I do if the camera is offline?
Check your Wi-Fi router and ensure the camera is within range. Restart the camera by unplugging it for 10 seconds. If the issue persists, reset the camera.
Does the camera record continuously?
You can choose between continuous recording (if a microSD card is inserted) or motion-triggered recording. Settings are adjustable in the app.
How do I mount the camera on a wall?
Use the included mounting bracket and screws. Drill holes where marked, insert anchors (if needed), attach the bracket, then slide the camera onto the bracket until it clicks.
Can I share access with family members?
Yes, in the First Alert app, go to Device Settings and select 'Share Device' to invite others via email. They will need to create their own account.
What is the field of view?
The camera has a 120° wide-angle lens, providing a broad view of the area.
Is the camera weatherproof?
No, the CM420 is designed for indoor use only. Protect it from rain, snow, and direct sunlight.
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