Overview
PROS
CONS
SPECS
Sensor Type
Alarm Type
Temp Range
Humidity
Our Top Choice
Nest Protect Smoke & CO Alarm
Nest is known for top-of-the-line home comfort and safety. If you won’t settle for less than the best, the Nest Protect could be your top choice.
Get alerts straight to your phone when the alarm goes off or batteries run low. Split spectrum sensor detects both fast- and slow-burning fires.10-year carbon monoxide sensor.
App may need improvement.
Split Spectrum Sensor
Smoke/Fire/CO
40°F to 100°F Ambient
20% RH to 80% RH
Best Value
First Alert Dual Sensor Smoke Alarm
First Alert is a top brand in home protection. A dual sensing smoke alarm ensures your family’s safety by detecting both smoldering and flaming fires.
Two different silence features. Easy installation and easy-to-access battery drawer.
Can’t tell if only one of the two sensors is malfunctioning.
Photoelectric and Ionization
Smoke/Fire
40°F to 100°F Ambient
10% to 95% RH
Gentex Photoelectric Smoke Alarm
Gentex makes a wide range of high-quality alarms for home and business use. The 7139LS is an ADA-compliant photoelectric smoke alarm with a bright strobe light.
A good choice for schools, businesses, and homes. High-decibel horn and bright strobe light make this an ideal unit for those with hearing impairment.
Battery backup alone won’t make light flash. No interconnect feature.
Photoelectric
Smoke
40°F to 100°F Ambient
Avoid Very Humid Areas
Kidde Battery-Operated Smoke & CO Alarm
Kidde home safety items provide customers the peace of mind they deserve. This combination smoke and carbon monoxide alarm has voice warning to tell you exactly what’s wrong.
Battery-operated alarm won’t be affected by power outages. Voice warning identifies whether it has detected smoke or carbon monoxide. Hush feature silences false alarms.
Recommended to be used in combination with a photoelectric smoke detector for optimum protection
Ionization and Electrochemical
Smoke/CO
40°F to 100°F Ambient
10% to 95% RH (non-condensing)
USI Wire-In Smoke Alarm
USI is committed to developing affordable, reliable home safety products. This ionization smoke alarm exemplifies that commitment; a basic, reliable alarm.
Affordable and reliable choice for home fire protection. Silencer button allows you to easily silence false alarms. Can be connected with other units.
Some customers got faulty devices.
Ionization
Smoke/Fire
40°F to 100°F Ambient
Avoid Very Humid Areas