---
product_id: 1148597
title: "Ademco 748 119db Dual-Tone Siren OPEN BOX"
brand: "honeywell"
price: "R1562"
currency: ZAR
in_stock: true
reviews_count: 9
category: "Honeywell"
url: https://www.desertcart.co.za/products/1148597-ademco-748-119db-dual-tone-siren-open-box
store_origin: ZA
region: South Africa
---

# Dual-tone warble or steady 119 dB max volume Tamper-resistant & weatherproof Ademco 748 119db Dual-Tone Siren OPEN BOX

**Brand:** honeywell
**Price:** R1562
**Availability:** ✅ In Stock

## Summary

> 🚨 Make your home the fortress everyone envies!

## Quick Answers

- **What is this?** Ademco 748 119db Dual-Tone Siren OPEN BOX by honeywell
- **How much does it cost?** R1562 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/1148597-ademco-748-119db-dual-tone-siren-open-box)

## Best For

- honeywell enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Weatherproof and tamper-resistant for reliable outdoor use
- • **Unmatched Loudness:** 119 dB siren blasts intruders away with authority
- • **Versatile Dual-Tone:** Choose between warble or steady tone for tailored alerts
- • **Smart Security Upgrade:** Seamlessly integrates with wireless systems & video surveillance
- • **Effortless Installation:** Mounts directly on 4" electrical box—no cabinet needed

## Overview

The Ademco 748 is a powerhouse 119 dB dual-tone siren designed for easy wall mounting without extra casing. Its tamper-resistant, weatherproof build ensures durability outdoors, while compatibility with wireless security systems and video cameras makes it a smart, modern choice for millennial homeowners seeking top-tier protection and peace of mind.

## Description

At 119 db, the Admeco 748 is the noisiest self-contained siren that is currently available. The fully tampered and weather-resistant Ademco 748 will directly mount to a 4" electrical box or wall which removes the need for a cabinet. Besides being economical as compared to other sirens, the condensed design of the appealing 748 makes installation easier than you ever thought -- both indoors and out.

Review: Nice And LOUD! But Not The Same desertcart - I'm leaving desertcart in light of it's support for the current administration. Mounted this on the outside of the barn wired into a motion sensor on the inside of the barn. Also have a barrel keyed on/off switch on the outside to interrupt one wire to the siren. That way I can disable it when I go in the barn, then re enable it when I leave, and any intruders get a nice blast should they break in!
Review: Works at voltages outside its spec sheet. - I tested the siren I received with a voltage-adjustable bench DC power supply, which told me the current draw at different test voltages. The siren would output both steady and warble tones at all the voltages I tested - between 4V and 14V. The enclosed spec sheet listed the rated voltage at 12 VDC with 1.2 Amp max at that voltage. I do not own a sound meter so did not make measurements of the sound level at different voltages, but the sound at 14V was definitely louder than at 4V. Warble tone drew about 15% ro 20% more current than steady tone at each test voltage (when warble and steady tone wires are both supplied voltages, only the steady tone sounds.) These are my measurements of warble current draw, rounded up to the nearest tenth of an amp: 14V: 1.0A; 13V: 0.9A; 12V: 0.9A; 11V: 0.8A; 10V: 0.8A; 9V: 0.7A; 8V: 0.7A; 7V: 0.6A; 6V: 0.5A; 5V: 0.4A; 4V: 0.3A Of course one should use a power supply matching the spec sheets rather than numbers from "some guy on the internet." I just happened to have a spare 12V, 1A wall transformer that does not meet the spec sheet requirement of 1.2A, but my testing shows that it should be fine to use. Note that anyone wanting to use this with Z-Wave needs a Z-Wave controlled power outlet plug, an AC to 12 VDC transformer to plug into the Z-Wave outlet, and then be willing to wire the transformer to the siren - either by soldering a plug to the siren's wires that mates to the transformer's plug, or cutting off the transformer's output plug and connecting the transformer output wires to the siren's power input wires. So some rudimentary electrical skill required (e.g. watch your polarity!)

## Features

- Very loud (119db) with two tone output available - either warble or steady
- Ready and easy to install - does not need to be disassembled
- Tamper resistant and weather proof
- Can be added to a wireless home security system with video surveillance cameras and more
- A home security system with a siren is a great way to scare criminals away from your home

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000X4LR64 |
| Best Sellers Rank | #52,707 in Electronics ( See Top 100 in Electronics ) #191 in Security Horns & Sirens |
| Control Method | Remote |
| Customer Reviews | 4.6 4.6 out of 5 stars (156) |
| Date First Available | October 2, 2001 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.68 pounds |
| Item model number | 748 |
| Manufacturer | Honeywell Ademco |
| Mounting Type | Wall Mount |
| Noise Level | 119 Decibels |
| Package Dimensions | 4.9 x 4.9 x 4.5 inches |
| Size | 1 Count (Pack of 1) |
| UPC | 781410035553 |

## Product Details

- **Battery Description:** Alkaline" or "Lithium-Ion" or "Lithium
- **Brand:** Honeywell
- **Color:** White
- **Compatible Devices:** Smartphone, Tablet
- **Power Source:** Battery Powered

## Images

![Ademco 748 119db Dual-Tone Siren OPEN BOX - Image 1](https://m.media-amazon.com/images/I/41lK2SL2LSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice And LOUD! But Not The Same Amazon
*by S***O on February 20, 2026*

I'm leaving Amazon in light of it's support for the current administration. Mounted this on the outside of the barn wired into a motion sensor on the inside of the barn. Also have a barrel keyed on/off switch on the outside to interrupt one wire to the siren. That way I can disable it when I go in the barn, then re enable it when I leave, and any intruders get a nice blast should they break in!

### ⭐⭐⭐⭐⭐ Works at voltages outside its spec sheet.
*by J***N on May 17, 2018*

I tested the siren I received with a voltage-adjustable bench DC power supply, which told me the current draw at different test voltages. The siren would output both steady and warble tones at all the voltages I tested - between 4V and 14V. The enclosed spec sheet listed the rated voltage at 12 VDC with 1.2 Amp max at that voltage. I do not own a sound meter so did not make measurements of the sound level at different voltages, but the sound at 14V was definitely louder than at 4V. Warble tone drew about 15% ro 20% more current than steady tone at each test voltage (when warble and steady tone wires are both supplied voltages, only the steady tone sounds.) These are my measurements of warble current draw, rounded up to the nearest tenth of an amp: 14V: 1.0A; 13V: 0.9A; 12V: 0.9A; 11V: 0.8A; 10V: 0.8A; 9V: 0.7A; 8V: 0.7A; 7V: 0.6A; 6V: 0.5A; 5V: 0.4A; 4V: 0.3A Of course one should use a power supply matching the spec sheets rather than numbers from "some guy on the internet." I just happened to have a spare 12V, 1A wall transformer that does not meet the spec sheet requirement of 1.2A, but my testing shows that it should be fine to use. Note that anyone wanting to use this with Z-Wave needs a Z-Wave controlled power outlet plug, an AC to 12 VDC transformer to plug into the Z-Wave outlet, and then be willing to wire the transformer to the siren - either by soldering a plug to the siren's wires that mates to the transformer's plug, or cutting off the transformer's output plug and connecting the transformer output wires to the siren's power input wires. So some rudimentary electrical skill required (e.g. watch your polarity!)

### ⭐⭐⭐⭐⭐ Great, LOUD Siren. A little pricey, but well worth it!
*by J***. on February 27, 2017*

Wicked loud siren!! Just received this for a client outbuilding install. Client wanted to hear siren from inside house and they can definitely hear it 200+ feet away!! Would definitely recommend this unit! uses 12v 1.2 amps of power. Also has a normally closed tamper switch on back of unit. There are five wires coming from back of unit. Common/ ground, red for warble, yellow for steady tone, and two white wires for tamper switch. Tamper switch works in this method: it is a black plastic momentary on switch. When unit is flush mounted against a flat surface, the momentary on switch is pushed in therefore completing the circuit with alarm panel. So take two white tamper wires and hardwire to your alarm panel; one for DC out from panel, and one as the circuit in from siren tamper switch. Program alarm panel as a normally closed door/ window/ whatever zone. IF for any reason someone messes with it outside/ wherever, alarm will sounds if the system is armed. LOVE IT!

## Frequently Bought Together

- Honeywell Ademco 748 119db Dual-Tone Siren OPEN BOX
- IS335 WIRED PIR Motion Detector, 40' x 56' by Honeywell

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-18*