---
product_id: 117922117
title: "Visonic Outdoor Bell Box Siren MCS-740 868mhz (Battery Powered) - Free Next Day Delivery in UK"
brand: "visonic"
price: "955192₫"
currency: VND
in_stock: false
reviews_count: 1
url: https://www.desertcart.vn/products/117922117-visonic-outdoor-bell-box-siren-mcs-740-868mhz-battery-powered
store_origin: VN
region: Vietnam
---

# Two-way wireless with dual antennas Battery-powered, cable-free freedom 110dB loud siren with high-power strobe Visonic Outdoor Bell Box Siren MCS-740 868mhz (Battery Powered) - Free Next Day Delivery in UK

**Brand:** visonic
**Price:** 955192₫
**Availability:** ❌ Out of Stock

## Summary

> 🚨 Stay ahead of threats with wireless power and piercing alerts!

## Quick Answers

- **What is this?** Visonic Outdoor Bell Box Siren MCS-740 868mhz (Battery Powered) - Free Next Day Delivery in UK by visonic
- **How much does it cost?** 955192₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/117922117-visonic-outdoor-bell-box-siren-mcs-740-868mhz-battery-powered)

## Best For

- visonic enthusiasts

## Why This Product

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

## Key Features

- • **Maximum Deterrence:** A piercing 110dB siren paired with a bright strobe light guarantees intruders won’t go unnoticed.
- • **Distinct Alarm Alerts:** Different sounds for intrusion and fire keep you instantly informed and ready to act.
- • **Dual-Antenna Reliability:** Experience rock-solid, two-way communication ensuring your security system never misses a beat.
- • **Effortless Wireless Setup:** Say goodbye to cables with quick, battery-powered installation that fits any home exterior.
- • **Weatherproof & Tamper-Resistant:** IP55-rated rugged design with double tamper protection keeps your system secure rain or shine.

## Overview

The Visonic MCS-740 is a fully wireless, battery-powered outdoor siren featuring a loud 110dB piezo alarm and high-intensity strobe light. Its dual-antenna two-way communication ensures reliable supervision and instant notifications for intrusion, fire, and system status. Designed for easy cable-free installation, it boasts IP55 weatherproofing and double tamper protection, making it a sleek yet robust security upgrade compatible with select Visonic PowerMax systems.

## Description

The MCS-740 two-way, self-powered fully wireless outdoor siren (IP55) provides the perfect security solution for home owners looking for an external siren that is both affordable and easy to install. It offers a cable-free installation and optional extended time between battery changes. The siren's two-way, fully supervised communication with the control panel and two diversity antennas assure highly reliable operation and optimal wireless performance, including visual and audial notifications of intrusions, fire alarms, low battery voltage, and communication disruptions. In addition, the siren also provides auditory squawk notifications of arming and disarming the security system. In the event of an alarm, the siren sound is extremely loud with a bright strobe light, ensuring the alarm is well noticed. The sleek design ensures the MCS-740 siren is clearly visible from almost every angle. This makes it highly effective at alerting and deterring potential intruders, while maintaining the clean external look of any building. Sleek design and high-power strobe light, Large free screen-print area available for company logo and information, Easy & Cabling-free installation, Fully wireless – battery-operated with no power supply required,  Two-way fully supervised communication with the control panel,  Two diversity antennas for highly reliable wireless performance, Audible and visual notifications of intrusions, fires, low battery voltage, communication disruptions, arming and disarming, Differentiated alarm sounds for intrusion and fire, Loud 110dB Piezo siren Double tamper protection (wall and cover) Robust design and weatherproof housing (IP55)Compatible with selected version of PowerMax PowerMaxPro versions 5.0.13 and up and 5.2.07 and up, 1x 103-304742 lithium battery included (pack of 2).

## Features

- ✅ Easy & Cable Free Installation & Double Tamper Protection
- ✅ Stylish Design with High Power Strobe Light
- ✅ Completely Wireless – Battery Operated (Battery Included)
- ✅ Different Alarm Sounds for Intrustion or Fire
- ✅ Compatible with Selected Version of Visonic PowerMax (See Main Description for Details)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Visonic |
| Power Source | Battery Powered |
| Sound level | 110 dB |
| Battery description | Lithium |

## Product Details

- **Brand:** Visonic
- **Power source:** Battery Powered
- **Battery description:** Lithium
- **Noise level:** 110 dB
- **Manufacturer:** Visonic

## Images

![Visonic Outdoor Bell Box Siren MCS-740 868mhz (Battery Powered) - Free Next Day Delivery in UK - Image 1](https://m.media-amazon.com/images/I/31ebOpkqDgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by K***T on 20 June 2020*

Great product, fast delivery

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**Shop now:** [https://www.desertcart.vn/products/117922117-visonic-outdoor-bell-box-siren-mcs-740-868mhz-battery-powered](https://www.desertcart.vn/products/117922117-visonic-outdoor-bell-box-siren-mcs-740-868mhz-battery-powered)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-06-03*