First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup, Contractor 6-Pack

4.7(11,719 ratings)In stock

Above normal

$120.00 is 25% above the $95.65 it normally sells for. It sold at or within 3% of $95.65 for at least about a week of the last 45 days.

Now: $120.00
Normally: $95.65
Lowest in 139 days: $80.75(Jul 3)
Highest: $120.00

Evidence: Strong139 days tracked542 price changeschecked 2h ago

Where today's price sits

Now $120.00Normal $95.65$80.75

View on amazon.com

Prices change. Confirm the price on Amazon before you buy. TrackPin may earn a commission if you buy, at no cost to you; it never changes a verdict.

Amazon price jumps and real deals, posted on X: @trackpindeals (opens in a new tab)

Price history

Tracked since Jun 25 · 139 days · 542 price changes

Ahead of Black Friday 2026 (Nov 27), it is 25% above its normal price of $95.65. A "sale" back to $95.65 would only return it to normal. First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup… price history, checked Nov 11, 2026: current price $120.00, normal (typical) price $95.65, average $99.21 over 139 days, lowest $80.75 (Jul 3, 2026), highest $120.00 (Nov 10, 2026).

Price
Not checked for 3+ days
Normal $95.65
5% or more below normal

How often does it drop below normal?

In the 139 days we've tracked it, it stayed 5% or more below today's normal price for an hour or more 39 times, typically lasting less than a day. The last time ended Sep 1. Brief dips under an hour (45) aren't counted.

A count of what happened, not a prediction.

More real deals in Tools & Home Improvement

See all

Get this as JSONThe same verdict and prices, from the TrackPin API.

GET/api/v1/product/B000KKHWLU

Request

curl https://trackpin.co/api/v1/product/B000KKHWLU \
  -H "x-api-key: $TRACKPIN_API_KEY"

const res = await fetch("https://trackpin.co/api/v1/product/B000KKHWLU", {
  headers: { "x-api-key": process.env.TRACKPIN_API_KEY },
});
const product = await res.json();

console.log(product.verdict.label, product.price.reference_cents);

import os, requests

r = requests.get(
    "https://trackpin.co/api/v1/product/B000KKHWLU",
    headers={"x-api-key": os.environ["TRACKPIN_API_KEY"]},
)
product = r.json()

print(product["verdict"]["label"], product["price"]["reference_cents"])

This is exactly what the API returns for this product. Free keys include 100 requests a day.

Request a key

Live responseAs of 01:46 UTC

{
  "asin": "B000KKHWLU",
  "title": "First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup, Contractor 6-Pack",
  "image": "https://m.media-amazon.com/images/I/71vT-IivtTL._AC_SL500_.jpg",
  "currency": "USD",
  "category": "Home Improvement",
  "category_label": "Tools & Home Improvement",
  "in_stock": true,
  "price": {
    "current_cents": 12000,
    "reference_cents": 9565,
    "discount_pct": -25.46,
    "is_deal": false,
    "observed_at": 1794437653477,
    "changed_at": 1794339879646,
    "checked_at": 1794437653477,
    "source": "stored"
  },
  "verdict": {
    "label": "above",
    "text": "Above normal",
    "pct_vs_normal": -25.46,
    "evidence": "strong",
    "stale": false,
    "suspect": false,
    "steady_since": null,
    "sentence": "Above normal. $120.00 is 25% above the $95.65 it normally sells for. It sold at or within 3% of $95.65 for at least about a week of the last 45 days."
  },
  "listing_claim": null,
  "stats": {
    "min_cents": 8075,
    "max_cents": 12000,
    "avg_cents": 9921,
    "history_days": 139,
    "price_levels": 716,
    "price_changes": 542,
    "distinct_prices": 26,
    "lowest_at": 1783091015485
  },
  "history": [
    {
      "price_cents": 10182,
      "from": 1794256190223,
      "to": 1794256845302
    },
    {
      "price_cents": 10047,
      "from": 1794257397048,
      "to": 1794318788804
    },
    {
      "price_cents": 12000,
      "from": 1794323752686,
      "to": 1794330331659
    },
    {
      "price_cents": 10047,
      "from": 1794335310202,
      "to": 1794335828623
    },
    {
      "price_cents": 12000,
      "from": 1794339879646,
      "to": 1794437653477
    }
  ],
  "last_seen": 1794437655389
}
// … 711 more steps in the full response

Normal price: the lowest price level the product held for at least 15% of the last 45 days (about a week). Prices within 3% of each other count as one level, and we use the lowest price in that level. How we calculate it → Prices are observations of amazon.com and may be incomplete or delayed. TrackPin is not affiliated with Amazon.

First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup, Contractor 6-Pack

Price history

How often does it drop below normal?

More real deals in Tools & Home Improvement

IMP3103 - Impact Products 28 Lambswool Duster

Proxxon KS 230 Scie circulaire fixe (Import Allemagne)

Evangeline Matte Black Waterfall Tub Faucet with Hand Shower, 2-Hole | 5.02 GPM High Flow Deck Mount Bathtub Filler, Lead-Free Stainless Steel Bath Tap for Rapid Soaking Tub Fill, DIY Easy Install

Slant/Fin Fine/Line 30 8 ft. Hydronic Baseboard Fully Assembled Enclosure and Element

Versa Swindon Minimalist Style Coat Rack, with 9 hooks for clothing or bags for the Hall, Measurements (H x L x W) 185 x 32 x 32 cm, Metal, Colour Red

Remac M1 Motorized Smart Electric Curtain Track with Remote 66"-114" | Apple Home Certified, Matter over Wi-Fi, no-cut telescopic rail, remote/app/voice, living rooms, center-opening only