We may earn a small commission on purchases made through our links.

Find any Amazon.com product's deals and best prices with our free Amazon deal finder and price tracker. Simply paste the product link (URL) or search by name in the box above. You'll get full product information, Deal Score, and all current deals. Shop smarter with the best Amazon deals finder in the USA.

x
Sorry, Something went wrong!
SITERWELL

SITERLINK Smoke Detectors with 9V Replaceable Battery GS509A 1 Pack

✅ In stock ⭐ Lowest price we've tracked 📉 Price recently dropped
S
Grade
💎 All-Time Low!
98.89/100
Current Price
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
$19.52
Listed $88.09
Save $68.57 78% OFF
Analysis Confidence 90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 26, 2026 10:43 AM · Prices & availability subject to change

Is This a Good Price on Amazon?

💎 All-Time Low!
  • 💎Verdict: All-Time Low!. Buy now — this is as cheap as it has ever been.
  • 💰The current price is 82% below what this product typically costs — a notable saving over its usual going rate.
  • 🏷️The retail sticker price has been slashed by 78% — a steep markdown from the official listing.
  • 📉Our analysis places this at the most competitive price point we have ever tracked for this product — an exceptional moment to buy.
  • 📈Pricing has been trending lower — momentum that adds further appeal to this deal.

How We Scored This Deal

Price Competitiveness 28/28
Recent Value 22/22
Market Standing 18.89/20
Deal Strength 20/20
Momentum 10/10

📝 Product Overview

🚚 Shipping Free Shipping

Product Details

✓FAST SMOKE ALARM, ENHANCE THE CHANCE OF ESCAPE: Adopting the exclusive trumpet-type 360 ° no dead-angle smoke cage technology, so that the smoke gathers faster, the alarm finds the danger earlier, 85 decibels of volume (like the sound of a car hooter) passes quickly convey the room to accelerate the evacuation of the family, especially at night.
✓REDUCE FALSE ALARMS, ENSURE ACCURACY: the use of dual light wave detection technology, can accurately determine the smoke generated by non-fire, this smoke alarm will be on the temperature, humidity, dust or other changes in the independent AI learning to compensate for the maintenance of constant sensitivity, reduce the rate of false alarms.
✓ONE BUTTON MUTE 10 HOURS, REDUCED DISTURBANCE: No more worrying about sudden low voltage and faulty alarm sound,we have 10 hours mute function, when we are sleeping or can't deal with it in time, press the test/silence button, you can prolong to change the batteries or deal with the cause of the false alarm.
✓QUICK AND EASY INSTALLATION: Battery operated smoke alarms require no rewiring and can be installed in seconds using the included 3M Sticker or easily mounted on a wall or ceiling using the included screws, anchors and mounting brackets. Please do not install in damp, drafty, covered areas.
✓TRUSTED SMOKE ALARM: According to statistics, a fire occurs every 38S in the U.S. Installing professional smoke alarms is important for preventing fires, improving survival rate and safeguarding life and property.

⚙️ Specifications

Brand
SITERWELL
Style
Replaceable Battery(NEW)
Power Source
Battery Powered
Product Dimensions
3.93"D x 3.93"W x 1.38"H
Item Weight
9.6 ounces
Manufacturer
‎SITERWELL ELECTRONICS CO.,LIMITED
UPC
725576460798
Item model number
GS509A
Size
12 PACK
Batteries Required?
No
ASIN
B0DJNL4GJQ
S
$19.52
Check Deal →