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forum threadJohnDubya posted Jan 09, 2026 06:34 PM
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forum threadJohnDubya posted Jan 09, 2026 06:34 PM

$34.70: Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 20SA10-V

$35

$42

16% off
Amazon
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Amazon [amazon.com] has Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 20SA10-V on sale for $34.70.

This product is typically listed around $40+. This is the lowest price ever seen on Amazon.

Details:
  • Brand: Kidde
  • Style: 9th Edition
  • Power Source: Hardwired
  • Color: White
  • Product Dimensions: 1.88"D x 5"W x 5"H
  • Item Weight: 0.6 Pounds
  • Alarm: Smoke Detector
  • Operating Humidity: 10 to 95% (No Condensation)
  • Sensor Type: Photoelectric

Features:
  • DETECTS SMOKE: Sounds a loud 85-decibel alarm when smoke is detected - 3 long beeps with red LED light flashing in time, repeating.
  • HARDWIRED and 10-YEAR BATTERY BACKUP: Operates on 120V AC wiring (installed in the ceiling). No battery changes for 10 years and saves up to 40 Dollar over the life of the detector.
  • ENHANCED SENSING TECHNOLOGY: Reduces false alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition and FCC standards.
  • VOICE ALERTS: Crystal-clear voice alerts tell you exactly why your alarm is sounding so you can react quickly.
  • INTERCONNECT CAPABILITY: When one alarm sounds, they all sound, so you can get out faster. (Different models offer different interconnection options and requirements. See User Guide for more info.)
Product Info
Community Notes
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Deal Details
Product Info
Community Notes
About the Poster
Amazon [amazon.com] has Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 20SA10-V on sale for $34.70.

This product is typically listed around $40+. This is the lowest price ever seen on Amazon.

Details:
  • Brand: Kidde
  • Style: 9th Edition
  • Power Source: Hardwired
  • Color: White
  • Product Dimensions: 1.88"D x 5"W x 5"H
  • Item Weight: 0.6 Pounds
  • Alarm: Smoke Detector
  • Operating Humidity: 10 to 95% (No Condensation)
  • Sensor Type: Photoelectric

Features:
  • DETECTS SMOKE: Sounds a loud 85-decibel alarm when smoke is detected - 3 long beeps with red LED light flashing in time, repeating.
  • HARDWIRED and 10-YEAR BATTERY BACKUP: Operates on 120V AC wiring (installed in the ceiling). No battery changes for 10 years and saves up to 40 Dollar over the life of the detector.
  • ENHANCED SENSING TECHNOLOGY: Reduces false alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition and FCC standards.
  • VOICE ALERTS: Crystal-clear voice alerts tell you exactly why your alarm is sounding so you can react quickly.
  • INTERCONNECT CAPABILITY: When one alarm sounds, they all sound, so you can get out faster. (Different models offer different interconnection options and requirements. See User Guide for more info.)

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Price Intelligence

Model: Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 20SA10-V

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Sort: Lowest to Highest | Last Updated 1/11/2026, 12:45 AM
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Amazon$34.70

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Jan 09, 2026 07:40 PM
5,590 Posts
Joined Oct 2003
RowdyReptileJan 09, 2026 07:40 PM
5,590 Posts
Funny, I was just shopping for these today.

With this sale, this model 20SA10-V [amazon.com] is $3 cheaper than the 20SA10 [amazon.com] ($37.79) that lacks the voice option. So if you need just one or two, this is a great deal. However, if you need three or four of these, the 20SA10 drops to as low as $30.69 per unit. Since this device will last 10 years, you may very well find it worth it to spend an extra $3-$4 per device to get the voice feature.

My house has three detectors in the hallways that I'm going to replace with units that also detect Carbon Monoxide [amazon.com]. I'll then use smoke-detector only units in the bedrooms.
Last edited by RowdyReptile January 9, 2026 at 12:42 PM.
Jan 09, 2026 08:19 PM
284 Posts
Joined Nov 2018
wallykidJan 09, 2026 08:19 PM
284 Posts
Quote from RowdyReptile :
Funny, I was just shopping for these today.With this sale, this model 20SA10-V [amazon.com] is $3 cheaper than the 20SA10 [amazon.com] ($37.79) that lacks the voice option. So if you need just one or two, this is a great deal. However, if you need three or four of these, the 20SA10 drops to as low as $30.69 per unit. Since this device will last 10 years, you may very well find it worth it to spend an extra $3-$4 per device to get the voice feature.My house has three detectors in the hallways that I'm going to replace with units that also detect Carbon Monoxide [amazon.com]. I'll then use smoke-detector only units in the bedrooms.
Doesnt the room needs carbon monoxide too?

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