A white square smoke alarm with a speaker grille, test/silence button, and battery eject slot on its front.

Gentex S Series S Hard Wired Smoke Alarm (917-0070-002)

by Gentex

$105.00, see price history

Price is what the vendor listed when last checked. Confirm it with the vendor before buying.

Setup with instructions This alarm has to be wired into household power and mounted to a junction box, so it is not a plug-and-play item. Clear manufacturer instructions are enough for a handy family member or an electrician to finish the job and test it in under an hour. It does not need a clinical assessment, though adding a flashing or vibrating alert for someone with hearing loss would be a separate step.

What it is

Summary

AI-generated from vendor-published content · October 1, 2026

This hard-wired photoelectric smoke alarm connects to your home's electrical system and keeps working during a power outage with a 9V battery backup. It sounds an 85 dBA horn at 3100Hz in a temporal 3 pattern, the standard three-beep evacuation signal. It can link with other Gentex smoke alarms that support interconnection, so one alarm going off can trigger the rest. Keep in mind that this is a standard audible alarm. It has no strobe or bed-shaker built in, so someone who can't hear a horn would need a separate flashing or vibrating alert added to the system.

Getting it

Try before you buy

Devices like this are often available to borrow through your state's AT Act program — typically free or low-cost — so you can try it before buying or pursuing funding.

Find your state's lending program →

Where to get it

Diglo Visit
$105.00

This is the vendor WhatCanHelp tracks for this product — it may also be available from other retailers or a local supplier, and prices vary.

Wondering how equipment like this gets paid for? See the official funding programs in your state.

Details

Quick Facts Catalog facts · auto-generated
Type
Addresses
Platform
Age range
Complexity
Setup with instructions
Price
$105.00
Funding
  • AT Act lending
  • Out of pocket

What setup looks like

  • Out of the box
    Install a 9V alkaline battery for backup power. The alarm indicates when the battery is low or missing.
  • With a guide
    1. Turn off power at the breaker, then mount the base to a standard junction box using the included mounting hardware.
    2. Connect the quick-disconnect wiring harness, and wire any interconnect line if you are linking it to other compatible Gentex alarms. Leave the dust cover on during installation.
    3. Restore power, remove the dust cover, and press the test button to confirm the alarm sounds. Plan on about 30 to 60 minutes per alarm. Hard-wiring should be done by a licensed electrician if you are not comfortable working with household wiring.

Sources & fine print

Vendor facts (name, price, platforms, vendor link) sourced from Diglo — view on vendor site (opens in a new tab); last checked October 31, 2026.

Classification & description AI-generated from vendor-published content on October 1, 2026 · confidence: high. Vendor specs may lag; verify before relying on details in a clinical or funding artifact.

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