---
product_id: 96450003
title: "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"
brand: "system sensor"
price: "4833295₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/96450003-system-sensor-2wta-b-smoke-alarm-with-sounder-relay-isolator
store_origin: VN
region: Vietnam
---

# Dual-color LEDs 85 dB sounder Plug-in design 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

**Brand:** system sensor
**Price:** 4833295₫
**Availability:** ✅ In Stock

## Summary

> 🔔 Stay Alert, Stay Safe!

## Quick Answers

- **What is this?** 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 by system sensor
- **How much does it cost?** 4833295₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/96450003-system-sensor-2wta-b-smoke-alarm-with-sounder-relay-isolator)

## 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

- • **🔒 Safety First:** Isolated thermal sensor for enhanced protection.
- • **💡 Visual Alerts:** Dual-color LEDs for instant status recognition.
- • **⚡ Effortless Setup:** Plug-in design with flexible mounting options.
- • **🔍 Simplified Monitoring:** Easy sensitivity measurement for peace of mind.
- • **🔄 Versatile Connectivity:** Form C relay for seamless integration.

## Overview

The System Sensor 2WTA-B Smoke Alarm combines advanced safety features with user-friendly design. It includes an 85 dB sounder, isolated thermal sensor, and a plug-in design for easy installation. With flexible mounting options and dual-color LEDs, this smoke alarm ensures you stay informed and protected at all times.

## 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

## 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 |
|---------------|-------|
| Manufacturer | System Sensor |
| Part Number | 2WTA-B |
| Item Weight | 0.01 ounces |
| Package Dimensions | 5.91 x 5.59 x 2.44 inches |
| Item model number | 2WTA-B |
| Is Discontinued By Manufacturer | No |
| Color | White |
| Power Source | Plug-in |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/51KRapoQ03L.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/31xExqsAHVL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/31gvHXh8aBL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/31rRKaw5s0L.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/61I+UWcfcXL.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.

## 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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**Shop now:** [https://www.desertcart.vn/products/96450003-system-sensor-2wta-b-smoke-alarm-with-sounder-relay-isolator](https://www.desertcart.vn/products/96450003-system-sensor-2wta-b-smoke-alarm-with-sounder-relay-isolator)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-03*