---
product_id: 96450003
title: "2WTA-B Smoke Alarm with Sounder, Relay and Isolator Options; Form C Relay; Isolated Thermal Sensor; Plug-in Design, Base Included; Removable Cover and Chamber; Dual-Color LEDs"
brand: "system sensor"
price: "€ 84.00"
currency: EUR
in_stock: true
reviews_count: 7
category: "System Sensor"
url: https://www.desertcart.ie/products/96450003-2wta-b-smoke-alarm-with-sounder-relay-and-isolator-options
store_origin: IE
region: Ireland
---

# 85 dB sounder clarity Plug-in design ease Isolated thermal sensor precision 2WTA-B Smoke Alarm with Sounder, Relay and Isolator Options; Form C Relay; Isolated Thermal Sensor; Plug-in Design, Base Included; Removable Cover and Chamber; Dual-Color LEDs

**Brand:** system sensor
**Price:** € 84.00
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of danger with smart, sleek protection 🔊

## Quick Answers

- **What is this?** 2WTA-B Smoke Alarm with Sounder, Relay and Isolator Options; Form C Relay; Isolated Thermal Sensor; Plug-in Design, Base Included; Removable Cover and Chamber; Dual-Color LEDs by system sensor
- **How much does it cost?** € 84.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/96450003-2wta-b-smoke-alarm-with-sounder-relay-and-isolator-options)

## Best For

- system sensor enthusiasts

## Why This Product

- Trusted system sensor brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Dual-Color LEDs:** Instant visual status updates for peace of mind at a glance.
- • **Powerful 85 dB Sounder:** Cut through noise with crystal-clear alerts that demand attention.
- • **Advanced Thermal Sensing:** Isolated sensor ensures accurate heat detection, minimizing false alarms.
- • **Remote Maintenance Ready:** Simplified sensitivity checks and remote signaling keep safety proactive.
- • **Plug-and-Play Installation:** Effortless setup with included base and Stop-Drop'N Lock for secure mounting.

## Overview

The System Sensor 2WTA-B Smoke Alarm combines a robust 85 dB sounder with an isolated thermal sensor and plug-in design for easy installation. Featuring dual-color LEDs and remote maintenance signaling, it offers reliable, professional-grade fire detection with flexible mounting and simplified sensitivity measurement—perfect for modern safety-conscious spaces.

## Description

System Sensor 2WTA-B Smoke Alarm with Sounder, Relay and Isolator Options; Form C Relay; Isolated Thermal Sensor; Plug-in Design, Base Included; Removable Cover and Chamber; Dual-color LEDs Key Features: - 12/24 VDC - 85 dB sounder - Form C relay - Isolated thermal sensor - Plug-in design (base included) - In-line terminals - Flexible mounting options - Stop-Drop'N Lock attachment to the base - Removable cover and chamber - Remote maintenance signaling - Drift compensation and smoothing algorithms - Simplified sensitivity measurement - Dual-color LEDs

Review: Safety First - Trustworthy alarm
Review: Quality product - Minimalistic look. Blends in nicely with any decor

## Features

- 12/24 VDC
- 85 dB sounder
- Form C relay
- Isolated thermal sensor
- Plug-in design (base included)
- In-line terminals
- Flexible mounting options
- Stop-Drop'N Lock attachment to the base
- Simplified sensitivity measurement
- Dual-color LEDs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F7JD1Z4 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #148,795 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #143 in Smoke Detectors & Fire Alarms |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (39) |
| Date First Available | April 15, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.01 ounces |
| Item model number | 2WTA-B |
| Manufacturer | System Sensor |
| Package Dimensions | 5.91 x 5.59 x 2.44 inches |
| Part Number | 2WTA-B |
| Power Source | Plug-in |

## Images

![2WTA-B Smoke Alarm with Sounder, Relay and Isolator Options; Form C Relay; Isolated Thermal Sensor; Plug-in Design, Base Included; Removable Cover and Chamber; Dual-Color LEDs - Image 1](https://m.media-amazon.com/images/I/51KRapoQ03L.jpg)

## Questions & Answers

**Q: Expiration date? Or manufactured date?**
A: You need to read the fine print around the date label.
Some are manufacture date but some say like a CO2 sensor have the expire date printed.

**Q: Product name says 4 wire, box model # in picture says 2 wire, product description says 2-wire, FAQs provide conflicting info. What is being sold?**
A: 2 wire

**Q: Can I replace only the top without changing the base? I have the exact same model.**
A: i had to replace 5 last year, and now i have 5 bottoms which may never be used! i truly do not think you can buy just brand new "tops"

**Q: Anyone know the Kidde or First Alert equivalent, if it exists?**
A: So the system sensor 2wta-b-2 wire smoke detector is a low voltage (24 volt)  smoke detector with a sound base. Low voltage smoke detectors are required when you exceed 12 smoke detectors in a residential house. Mostly in houses exceeding 5000+ sq ft you will find low voltage system sensor houses. 

Kiddie and first alert are line voltage (120v) smoke detectors. Most modest houses under 4500 sq ft have line voltage smoke detectors.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Safety First
*by E***T on December 13, 2025*

Trustworthy alarm

### ⭐⭐⭐⭐⭐ Quality product
*by D***. on November 5, 2025*

Minimalistic look. Blends in nicely with any decor

### ⭐⭐⭐⭐⭐ If you are replacing, make sure you have the current model# to insure easy installation.
*by R***U on October 12, 2025*

Perfect replacement.

## Frequently Bought Together

- System Sensor 2WTA-B Smoke Alarm with Sounder, Relay and Isolator Options; Form C Relay; Isolated Thermal Sensor; Plug-in Design, Base Included; Removable Cover and Chamber; Dual-Color LEDs
- System Sensor 5601P single-circuit, 135¦ f fixed-temp/rate-of-rise no

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-12*