---
product_id: 84104823
title: "4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base"
brand: "system sensor"
price: "A$185"
currency: AUD
in_stock: true
reviews_count: 6
category: "System Sensor"
url: https://www.desertcart.com.au/products/84104823-4wta-b-4wtab-12-24-vdc-photoelectric-smoke-detector-thermal
store_origin: AU
region: Australia
---

# Built-in loud sounder 4-wire plug-in design Photoelectric + thermal sensing 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base

**Brand:** system sensor
**Price:** A$185
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base by system sensor
- **How much does it cost?** A$185 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/84104823-4wta-b-4wtab-12-24-vdc-photoelectric-smoke-detector-thermal)

## 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

- • **Dual Sensor Precision:** Photoelectric smoke detection combined with thermal sensing ensures faster, smarter fire alerts.
- • **Effortless Maintenance:** Removable detector cover and chamber make cleaning a breeze, keeping your system reliable and responsive.
- • **Plug & Play Pre-Wiring:** Simplify installation with a plug-in base that lets you pre-wire before mounting—perfect for seamless upgrades.
- • **Integrated Loud Sounder:** Built-in sounder delivers clear, powerful alerts to keep your space safe and compliant.
- • **Nuisance Alarm Minimizer:** Advanced drift compensation and smoothing algorithms reduce false alarms caused by dust and short-term smoke spikes.

## Overview

The SYSTEM SENSOR 4WTA-B is a cutting-edge 4-wire photoelectric smoke detector featuring thermal sensing and an integrated sounder. Designed for professional-grade safety, it supports pre-wiring with a plug-in base, uses intelligent algorithms to minimize false alarms, and offers easy maintenance with removable covers. Ideal for modern homes and offices seeking reliable, low-voltage fire detection.

## Description

The 4WTA-B is a 4-wire, photoelectric i3 smoke detector with thermal sensor and built-in sounder.

Review: Low voltage wiring with sounder - I got this to replace an old low voltage smoke that was connected to a dead alarm system. The alarm system was replaced with a konnected pro panel. I ran ethernet cable to this smoke detector from the konnected panel. This smoke has no hush button, so i used the alarm2 output to power the smoke detector. This allows me to easily cut power to the smoke (the proper way to hush it) for a false alarm (which has not happened in the months that I've had this device installed near my kitchen). It's working great.
Review: great replacement for an outdated unit - great quality priced right and worked as advertised and has a loud detection noise easy instructions if you're qualified

## Features

- Photoelectric smoke detector with plug-in design allowing pre-wiring before installation
- Drift compensation automatically adjusts sensitivity for dust accumulation minimizing nuisance alarms.
- Smoothing algorithms that adjust for short term spikes of smoke and dust minimizing nuisance alarms.
- Removable detector cover and chamber for easy cleaning

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005Y6IOMQ |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #183,096 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #158 in Smoke Detectors & Fire Alarms |
| Brand | System Sensor |
| Color | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (51) |
| Date First Available | October 22, 2011 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.01 ounces |
| Item model number | 4WTA-B |
| Manufacturer | System Sensor |
| Package Dimensions | 10.39 x 5.98 x 2.52 inches |
| Part Number | 4WTA-B |
| Power Source | Corded Electric |
| Sensor Type | Photoelectric |
| Style | Modern |
| UPC | 670875922129 |

## Product Details

- **Brand:** System Sensor
- **Color:** White
- **Item Weight:** 0.01 Ounces
- **Manufacturer:** System Sensor
- **Power Source:** Corded Electric
- **Sensor Type:** Photoelectric
- **Style:** Modern
- **UPC:** 670875922129

## Images

![4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Image 1](https://m.media-amazon.com/images/I/411VxVYgaML.jpg)

## Questions & Answers

**Q: Can I purchase it without the base? I am replacing a number of detectors of the same type, and don't need new bases.**
A: No the sensor comes with the base.

**Q: Will this work with dsc 1832 board?  can it be connected with addition sensors (i need 5)?**
A: No it will not. I would recommend consulting an alarm professional

**Q: Is this compatible out of the box with Honeywell Ademco Vista 20p alarm panels?**
A: yes u jus need to check if your wiring is 2 wire or 4 wire they make detectors for both.

**Q: Is this a standalone sensor, or part of a syddtem?**
A: “Either or” This sensor can be integrated into a system or stand alone.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Low voltage wiring with sounder
*by J***N on January 28, 2024*

I got this to replace an old low voltage smoke that was connected to a dead alarm system. The alarm system was replaced with a konnected pro panel. I ran ethernet cable to this smoke detector from the konnected panel. This smoke has no hush button, so i used the alarm2 output to power the smoke detector. This allows me to easily cut power to the smoke (the proper way to hush it) for a false alarm (which has not happened in the months that I've had this device installed near my kitchen). It's working great.

### ⭐⭐⭐⭐⭐ great replacement for an outdated unit
*by A***R on January 29, 2025*

great quality priced right and worked as advertised and has a loud detection noise easy instructions if you're qualified

### ⭐⭐⭐⭐ Good
*by P***N on September 26, 2018*

Good

## Frequently Bought Together

- SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base
- System Sensor 4WT-B 4-wire, photoelectric i3 smoke detector with a 135 Degree fixed thermal sensor
- SYSTEM SENSOR CO1224T 12/24 volt, 4-wire, system-monitored C02 carbon monoxide detector w/ RealTest Technology

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**Shop now:** [https://www.desertcart.com.au/products/84104823-4wta-b-4wtab-12-24-vdc-photoelectric-smoke-detector-thermal](https://www.desertcart.com.au/products/84104823-4wta-b-4wtab-12-24-vdc-photoelectric-smoke-detector-thermal)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-05*