What Are the Specifications of the USI/SM/REP Smoke Alarm?
Looking for a reliable, no-nonsense smoke alarm to keep your home safe? The USI/SM/REP and USI/SM/REP/3 models are photoelectric smoke alarms designed to detect slow-smoldering fires, which often produce thick, toxic smoke before erupting into flames. This unit is a great fit for single-family dwellings and offers peace of mind through simplicity and safety, all without any radioactive materials.
Key Areas Covered:
Model Number: USI/SM/REP & USI/SM/REP/3
Product Overview: Independent photoelectric smoke alarm for residential use
Specifications: Detailed below
Features & Benefits: Designed for maximum protection against smouldering fires
Installation Requirements: Wall or ceiling mount in accordance with NFPA standards
FAQs
Usage & Tips
Specifications:
Power Source: 9v Replaceable Carbon Zinc Battery (EVEREADY 1222 / GP1604S)
Operating Temperature: 40°F – 100°F (4.4°C – 37.8°C)
Dimensions: 3.93 x 1.37 in. (100 x 35 mm)
Voltage: Not specified (battery-powered)
Alarm Volume: ≥ 85dB @ ~10 feet
Warranty: 10 years from date of purchase
Rated Life: 10 years
Mount Type: Ceiling or Wall
Safety Rating: UL94 V2 Flame Retardant
Indicator Light: Red LED flashes during alarm and test modes
Alarm Pattern: 3 long beeps, 1.5-second pause, repeating
Features & Benefits:
Sensitive to slow-smoldering fires
Replaceable battery design for easy maintenance
Loud, 85dB+ alarm for quick alert
Visual (LED) and audio indicators
Alarm silence feature for nuisance alerts (approx. 8 mins)
End-of-life warning and reset feature
Easy installation with optional locking feature
Installation Requirements:
Use only in indoor, single-family residential environments
Do not install within 6 ft of cooking or heating appliances
Avoid locations with high humidity or direct sunlight
Must be installed in each sleeping area and on each level of the home
Adhere to NFPA 72 and NFPA 70 codes during installation
FAQs
Q: How often should I replace the battery?
A: At least once a year or when the low battery warning chirps every 40 seconds.
Q: Can I install this in my garage?
A: No, garages may cause false alarms due to combustion gases.
Q: What’s the lifespan of this alarm?
A: The alarm should be replaced every 10 years from the manufacture date.
Q: Is this alarm compatible with other interconnected alarms?
A: No, it operates independently and is not designed for interconnection.
Usage & Tips
Test the alarm weekly using the TEST/SILENCE button.
Clean the alarm monthly with a vacuum brush attachment.
Don’t spray cleaning products or aerosols near the unit.
Mount on ceiling or wall, preferably central in the room.
Always stand back ~3 feet when testing to protect your hearing.