Skip Content

Smoke Alarm,12/24 VDC, 2-Wire,Therm Sen close
close x

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.
Megaphone How can we improve our Product Images?

Smoke Alarm, 12/24 VDC, 2-Wire, Therm Sen

Price $57.70 / each

Activate Now

to save with

Select AdvantageSM

Please sign in or register to access lists

Confirm ZIP Code to determine availability.


Invalid Zip Code


Ship to: (Change)


Invalid Zip Code

  • Item # 20JY98
  • Mfr. Model # 2WT-B
  • UNSPSC # 46191501
  • Catalog Page # N/A
  • Shipping Weight 0.45 lbs.
Country of Origin Mexico Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • Item Smoke Alarm
  • Detection Method Photoelectric
  • Interconnection Capability No
  • Power Source 12/24 VDC, Two-Wire
  • Visual Alert Red LED
  • Diameter 5-19/64"
  • Height 2"
  • Digital Readout No
  • Battery Backup No
  • Features Removable Detector Cover and Chamber, Built-In Remote Maintenance Signaling, Drift Compensation and Smoothing Algorithms, Thermal Sensor
  • Hush Button No
  • Test Button Yes
  • Locking Pin No
  • Operating Temp. 32 Degrees to 120 Degrees F
  • Standards UL, CSFM
  • Includes Base
  • Manufacturers Warranty Length 3 yr.
Megaphone How can we improve our Technical Specifications?

Compliance and Restrictions



Smoke alarm features include an isolated thermal sensor, flexible mounting options, and drift compensation and smoothing algorithms to reduce nuisance alarms. Simple installation.

Alternate Search Terms

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.