# External Alarm Siren Commax MR-100R-S (MR-100R-S) — outdoor alarm siren for security systems

**URL:** https://aio.lv/en/product--commax-mr-100r-s--12257637
**Data updated:** 2026-04-14 22:29 (EEST)
**Category:** CCTV Accessories
**Manufacturer:** Commax
**Manufacturer code:** MR-100R-S
**EAN:** 5902887099816
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 28.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 23.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--commax-mr-100r-s--12257637

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Commax MR-100R-S is an external alarm siren designed for integration with security and alarm systems. As an outdoor peripheral device, it provides audible warning signals and visual indication to deter intruders and alert occupants. Suitable for residential and commercial use, it connects to standard alarm control panels and mounts on exterior walls for perimeter protection.

## Long description

Commax MR-100R-S is an external alarm siren designed for outdoor use with intrusion and security systems. It delivers audible alarm tones and visual signaling to indicate breaches or emergencies, and is intended to be mounted on exterior walls or other outdoor structures. The device is compatible with common alarm control panels and aims to provide clear perimeter warning for both residential and commercial properties.
Advantages
The siren combines loud acoustic alerts with visible signaling to increase detection and deterrence effectiveness. Its weather-resistant housing allows continuous outdoor installation while maintaining functional electrical connections to a central alarm panel. The product is compact and engineered for straightforward wall mounting and wiring to typical security control units.
Suitable for
Perimeter protection of houses, apartments and small residential complexes
External signaling for commercial buildings, shops and offices
Integration with wired alarm control panels and security systems
Deterrence of unauthorized entry and rapid alerting of occupants and neighbors
When it may not be suitable
This external siren is intended to work with compatible alarm control panels that provide the necessary power and triggering outputs; it may not be suitable for systems without a matching wired interface or for standalone wireless-only installations. It is not a substitute for internal notification devices where indoor signaling standards or volume requirements differ.
Key specifications
Intended installation: outdoor wall mounting
Functions: audible alarm tones and visual indication (strobe/LED)
Compatibility: designed for connection to standard wired alarm control panels
Housing: weather-resistant enclosure suitable for exterior use
Mounting: surface-mounted on exterior walls or vertical surfaces
How to use
Mount the siren on a secure exterior surface at a height and location that maximizes audible and visual coverage while remaining accessible for wiring. Connect the device to the alarm control panel following the panel manufacturer’s wiring diagram and the siren’s polarity and power specifications. After installation, test the unit using the alarm system’s output test function to verify sound and visual operation, and seal cable entry points to maintain weather protection.
What to consider before purchase
Ensure your alarm control panel provides the correct wired output and power for an external siren
Verify local regulations on outdoor alarm sound levels and permitted signaling devices
Confirm mounting location is sheltered from direct water ingress and allows secure cable routing
Check that the audible level and visual indication meet your site’s deterrence and notification needs
Usage recommendations
Place the siren where both sound and light are unobstructed by surrounding structures; perform regular tests and visual inspections, and use corrosion-resistant conduit or grommets for cable entries to prolong outdoor reliability.

## FAQ

### How much does the Commax MR-100R-S External Alarm Siren cost, and is it available for purchase?

The price is 28.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Commax products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Commax service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12257637/68523695_large.webp