Kidde and First Alert/BRK offer several residential alarm configurations. The useful comparison is between exact models that fit the required detection, power and connections—not a universal winning brand.
Residential alarm replacement. Defined work can be estimated; unknown-fault investigation is a separate scope.
A standalone battery combination alarm, a hardwired smoke-only alarm and a smart connected combination serve different needs. Comparing them only by price or brand hides the differences that matter to the installation.
The examples below are documented educational candidates. They do not imply that every model is stocked, installed by Mister Safety, free of recalls or compatible with your existing alarms. Current availability and the proposed configuration are confirmed for the project.
13 documented model examples. This is not a compatibility or safety result.
120-V AC + 2 replaceable AA backup batteries
Smoke-only sensing. Remote CO announcement is a separate, exact-model compatibility question.
Sources: Kidde · DETECT AC User Guide / Kidde · Hardwired Alarm Compatibility Guide
120-V AC + sealed 10-year backup
The -V variant adds voice. A sealed backup does not make this a battery-only alarm.
Sources: Kidde · DETECT AC User Guide / Kidde · Hardwired Alarm Compatibility Guide
120-V AC + 2 replaceable AA backup batteries
The -V suffix identifies the voice version. Identify every retained model before selecting a replacement.
Sources: Kidde · 30CUAR hardwired combination alarm / Kidde · DETECT AC User Guide / Kidde · Hardwired Alarm Compatibility Guide
120-V AC + sealed 10-year backup
The -V variant adds voice. Backup arrangement, sensing and compatible remote events are separate features.
Sources: Kidde · DETECT AC User Guide / Kidde · Hardwired Alarm Compatibility Guide
Sealed battery-only power
The -V variant adds voice. Not automatically a suitable replacement for a required connected alarm.
Sources: Kidde · 30CUD10 battery combination alarm / Kidde · DETECT DC User Guide
120-V AC + 2 replaceable AA backup batteries
Voice. Do not assume compatibility with earlier Kidde RF models. Manufactured/mobile-home suitability needs exact-model clarification.
Sources: Kidde · 30CUAR-VRF wireless/hardwired combination alarm / Kidde · Wire-Free Interconnect AC User Guide
120-V AC + 2 replaceable AA backup batteries
The manual separates local battery alarm operation from Wi-Fi availability without AC. Optional app/monitoring services are not an included installation promise.
Sources: Kidde · Ring Smart Smoke + CO Alarm / Kidde · Ring RGSAR-RW / RGCUAR-RW User Guide / Kidde · Hardwired Alarm Compatibility Guide
120-V AC + replaceable 9-V backup battery
Manufacturer-listed successor to 9120B. Precision Detection branding does not mean every model is photoelectric.
Sources: First Alert / Resideo · SMI100-AC hardwire smoke alarm / First Alert / Resideo · SMI100-AC User Manual
120-V AC + 2 replaceable AA backup batteries
Voice/location alerts. Manufacturer-listed successor to SC7010BV; the exact retained network still needs review.
Sources: First Alert / Resideo · SMCO100V-AC combination alarm / First Alert / Resideo · SMCO100V-AC User Manual
120-V AC + sealed 10-year backup
Manufacturer-listed successor to SC9120LBL. Distinct from the photoelectric SMCO100V-AC family.
Sources: First Alert / Resideo · SMICO105-AC combination alarm / First Alert / Resideo · SMICO105-AC User Manual
Sealed battery-only power
Slim combination model and listed successor to PC1210. Do not infer app capability from generic catalogue advertising.
Sources: First Alert / Resideo · SMCO210 slim combination alarm / First Alert / Resideo · SMCO210 User Manual
120-V AC + sealed nonreplaceable lithium backup
The battery SC5, SMCO600NV, is a different variant. Confirm the exact setup, account requirements and supported remote functions.
Sources: First Alert / Resideo · SC5 hardwire smart smoke/CO alarm / First Alert / Resideo · SMCO600NV-AC User Manual / First Alert / Resideo · SC5 Compatible Alarms
Sealed lithium battery-only power
Digital/temperature display. Does not detect smoke. Apply its indoor operating and placement instructions, not a general wall-mount assumption.
Sources: First Alert / Resideo · CO5-B10D CO alarm with digital/temperature display / First Alert / Resideo · CO5-B10D User Guide
No examples match this filter. This does not identify or assess your alarm. You can still request help with unknown model details.
Kidde DETECT AC includes smoke-only and combination variants, with replaceable AA or sealed backup options. Voice versions have their own suffixes. Battery-only DETECT models are a separate choice.
First Alert’s current family includes both ionization and photoelectric smoke sensing. SMI100-AC and SMICO105-AC specify ionization; SMCO100V-AC specifies photoelectric. Manufacturer-listed predecessor names help identification, but they are not universal drop-in replacement instructions.
Sources: Kidde · DETECT AC User Guide / Kidde · 30CUD10 battery combination alarm / First Alert / Resideo · SMI100-AC hardwire smoke alarm / First Alert / Resideo · SMCO100V-AC combination alarm / First Alert / Resideo · SMICO105-AC combination alarm
Kidde VRF, Kidde/Ring and First Alert SC5 are distinct configurations. Wireless interconnection and Wi-Fi phone notifications are different functions. Confirm the exact supported models, accounts, services and behavior when power or internet is interrupted.
SC5’s battery and AC variants have separate compatibility lists. Do not promise universal Nest interoperability, every cross-model voice/location feature or automatic emergency dispatch. Optional monitoring is not an included Mister Safety service simply because an alarm supports an app.
Sources: Kidde · Wire-Free Interconnect AC User Guide / Kidde · Ring Smart Smoke + CO Alarm / Kidde · Ring RGSAR-RW / RGCUAR-RW User Guide / First Alert / Resideo · SC5 hardwire smart smoke/CO alarm / First Alert / Resideo · SC5 Compatible Alarms
The notices below illustrate why exact identifiers matter. This is not an exhaustive recall database and absence from the list does not establish safety. Follow the official notice for current eligibility and remedy. If a hidden label is needed, obtain professional help rather than removing an installed alarm yourself.
Scope: i12010S: manufacture December 18, 2013–May 13, 2014; i12010SCO: December 30, 2013–May 13, 2014; KN-COSM-IBA: October 22, 2013–May 13, 2014.
The CPSC notice describes possible failure after a power interruption and a free replacement remedy. It says to continue using the affected alarm until the replacement is installed. That remedy belongs to this notice.
Scope: 2040, 2050, 2060 and 2070 series with the specified “TRUSENSE” and/or “AMBER = FAULT” markings; purchases May 2019–September 2020.
These are series identifiers, not an exhaustive exact-SKU list. Use the manufacturer’s official identification and remedy instructions. Do not extend this notice to all current DETECT products.
Scope: The specified combination product with FCC ID 2ANDL-XR3 and manufacture marking 2023.DEC.02.
CPSC describes smoke warning failure and a refund remedy, with continued use until a replacement is installed. Follow its exact current handling instructions; do not apply them to another product.
Scope: The TJTFJS 2-in-1 combination product identified in CPSC’s warning. Match the official photographs and identifiers.
CPSC directs immediate stop-use and replacement with working alarms. This warning has different instructions from the Treatlife recall; do not combine their remedies.
Scope: P4010ACLEDS-2, P4010ACLEDSCO-2 and SLED177i; the notice distinguishes production before and after October 22, 2021.
A manufacturer strobe pulse/listing notice affects accessibility claims. Do not assume ADA/FHA/HUD suitability from a product name. Verify the exact device, date and project requirements.
Sources: Kidde · Product Safety Notices / Kidde · TruSense Product Safety Notice / CPSC · Kidde Recalls Smoke and Combination Smoke/CO Alarms / CPSC · Treatlife combination smoke/CO alarm recall / CPSC · Warning: TJTFJS combination smoke/CO detectors / CPSC · Recalls index
A sealed battery, a replacement interval and a limited manufacturer warranty are separate statements. Maintain the exact model’s instructions and dates. A new backup battery does not restart the sensing element’s life.
Equipment-only prices can change and do not include the property-specific installation. We do not turn a manufacturer listing into an installed quote. Mister Safety’s qualifying installation warranty is separate from the alarm manufacturer’s product terms.
Sources: Mister Safety · Limited Warranty / Kidde · DETECT DC User Guide / First Alert / Resideo · SMCO210 User Manual
Asking which brand is best is a little like asking which vehicle is best without saying what it needs to carry. First define the job: smoke, CO or both; battery-only or hardwired; standalone or connected. Then compare the models that can actually do that job in the home.
A familiar old model name or a similar housing can help identify the starting point, but it does not approve a replacement. The exact instructions and the devices that will remain connected are more important than a broad brand reputation.
Smart functions may be useful when their dependencies are understood. They should add to a correctly planned local alarm arrangement, not distract from it. The goal is a suitable, documented configuration and a clear installation scope—not the longest feature list.
The evidence does not support one universal winner. Exact detection needs, locations, power and compatible connections guide a useful shortlist.
Not automatically. Check the complete model number, exact manufacturer instructions and the retained arrangement.
Only a specifically supported and purchased service can provide its stated monitoring features. App capability alone does not establish included monitoring or automatic 911 dispatch.
Tell us the features you are considering and any known models in the home. We can discuss a suitable replacement scope and confirm the available installation options.
A free estimate prices defined replacement work. Finding an unknown fault or providing a broader assessment may have a charge. The scope and any charge are explained and approved before paid work begins.
Read scheduling and fee detailsBased in Zephyrhills and the Tampa Bay area. We confirm availability for your Florida service address and project.
Our office answers 24/7. This form is for a nonemergency service inquiry. For a suspected fire or CO emergency, get outside and call 911 from safety.
Mister Safety’s installation warranty terms are separate from the product manufacturer’s warranty.
Sources reviewed September 11, 2026. Educational guidance for residential alarm planning. Exact manufacturer instructions, installation conditions and applicable project requirements govern. Product examples are not a compatibility approval or a complete recall check.
CPSC · No single update date displayed
CPSC · No update date displayed
U.S. Fire Administration · No date retained
Kidde · G-000054-01 EN, Rev. A2; calendar date not shown
Kidde · Undated current catalogue
First Alert / Resideo · Undated current catalogue
First Alert / Resideo · Undated current catalogue
First Alert / Resideo · Undated current catalogue
Kidde · Current linked guide; date not recorded
Kidde · Undated current catalogue
Kidde · Current linked guide; date not recorded
First Alert / Resideo · Undated current catalogue
First Alert / Resideo · No update date displayed
Kidde · Individual notices 2014–2025
Kidde · 2021-05-06
CPSC · 2014-09-11; hotline updated 2024-03-27
CPSC · 2026-06-25
CPSC · 2026-08-20
CPSC · Continuously updated
Mister Safety · No update date displayed
Kidde · Current linked guide; date not recorded
First Alert / Resideo · M08-0600-000, printed 03/23
Kidde · Copyright 2026
Kidde · Undated current catalogue
Kidde · Undated current catalogue
First Alert / Resideo · M08-179722; calendar date not recorded
First Alert / Resideo · M08-179720; calendar date not recorded
First Alert / Resideo · M08-178315; calendar date not recorded
First Alert / Resideo · Undated current catalogue
First Alert / Resideo · M08-0786-000; calendar date not recorded
First Alert / Resideo · Undated current catalogue
First Alert / Resideo · 900-00663-001-00, printed 03/26