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Product Description
From the Manufacturer
Universal Security Instruments SS-770 ionization smoke and fire alarm with micro profile style is a compact 9-Volt battery-operated alarm. Functions involve an audible 30-day low battery warning, alarm power and test button and a loud, 85-decibel horn. Best for replacement of most current smoke alarms, providing rapid and simple installation--no wiring required.
Smoke Fire AlarmGeneral purpose smoke and fire alarm for boats and RV'sMeets the requirement of NFPA 302 stating that "All vessels 26 feet or much more in length with accommodation spaces intended for sleeping shall be equipped with a single station smoke alarm that is listed to UL217 for recreational vehicles..."Dimensions: four.25" Diameter, 1.75" heightAlarm 85dbListing: UL 217 for RV'sComplies with U.S. Coast Guard Section 28.325(b) and Section 181.450 inclusiveUses the ionization principle of detection for detecting rapid-flaming fires which consume combustible supplies quickly and spread quickly9v battery operated (battery included) no wiring needed for simple installationLow battery alarm functions audible beeps to indicate a battery replacement is requiredIncorporates an internationally recognized horn signal for evacuation. In the course of the alarm mode, the horn produces 3 brief beeps followed by a two second pause and then repeats.Capabilities a test button that is very easily accessible on the cover of the alarmRecommended installation is to install one particular unit in each and every sleeping accommodation, salon, galley, engine/generator area, and electrical control roomSuitable for marine and recreational automobile use
Buyer Critiques
SS-770 Acceptable especially Economical Smoke Alarm, lengthy battery life
The Universal SS-770 Ionization Smoke and Fire Alarm is ordinary but unusually compact: four-inch diameter, 1-inch thick, white plastic. Tremendously economical $four.45 from HmDpt 6/16/ten. Manufacturer generic six page insert: [...]
This smoke alarm functions but is as standard as probable: 9V battery only, ionization detector only, no LED at all, no hush button. Just a weekly test button and the alarm beeper. It comes with a basic non-alkaline 9V carbon-zinc battery that will need to final for about four years. A higher-top quality battery would final longer. The alarm itself is supposed to be replaced ten years right after the date of manufacture. It comes with a worthless five year warranty which demands a payment of $4. Made in China.
The missing hush button is the worst function of this alarm. You are supposed to mount it on the ceiling, or inside 12 inches of the ceiling. But if it goes off due to the fact you burned the toast, it could be tough to reach! Even just after you have figured out how to rip it off the wall (twist and pull), the irritating alarm can not be silenced until you figure out how to disconnect the battery, which is not hassle-free to do if you are in a undesirable mood.
The smoke alarm mounts on a round white plastic base plate, which is screwed to the wall or ceiling with two lengthy skinny screws that are only partly threaded. The screws operate OK on walls but would not securely mount in to ceiling sheet-rock. Secure mounting would need bigger screws and/or plastic sheet-rock inserts.
A battery-operated smoke alarm like this is a amazing life-saving tool for men and women who sincerely want to have this sort of protection. But if you are a landlord dealing with tenants who might possibly not correctly replace batteries as required, or somebody who just never ever wants to be bothered with taking care of gear, you need alarms that are wired into the AC power.
Mainly because this is an ionization (radioactive) type of smoke alarm, it utilizes especially small battery power. There is no have to have to replace the battery twice a year that would be wasteful. The 9V battery should really normally last considerably longer than a single year. If you are comfortable utilizing a volt meter, measure the battery twice a year and replace it when it gets a lot below 9.0V. The SS-770 should certainly go on operating till the battery gets down to about 7.5V, at which point it will get started chirping about every single 40 seconds.
Based on current measurements, an ordinary "heavy duty" 9V battery really should last about 4 years, a really good alkaline battery need to final about 6 years, and a super-duper Lithium battery really should last more than 10 years.
These are actual power measurements:
9.5V 6microAmps + present spikes
Low-power measurements:
3.2-three.6V (three.2-3.8V) quiet rapidly chirp
3.6-five.2V (3.8-6.2V) three beeps, pause repeat
five.2-7.3V (6.two-7.7V) rapid chirp each and every 41 seconds - time to replace the battery!
^volt range going down^ (^volt range going up^)
non-techical translation: don't let the battery voltage get beneath 8 volts
I like the low cost and the alarms are standard and do what they are supposed to. I would order significantly more of this type for my house in the future.
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