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Siren-Outdoor-S8 - outdoor siren

Manufacturer: Heyi Electronics
Item code: S8-SOS
Availability: In Stock
Warranty: 2 years
Categories: Smart Alarm System > Wireless Devices > Sensor > Siren, Sounder

€109.90 Ex Tax: €89.35

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The Trikdis Siren-Outdoor-S8 is a wireless outdoor siren from the 868 MHz Trikdis S8 family. It requires a Trikdis RF-S8 receiver, which connects to the FLEXi SP3 panel over the RS485 bus.

Features

Communication:

Radio communication at 868 MHz
Wireless - no cabling needed
Plug & Play pairing with the panel

Connection:

Connects to the FLEXi SP3 panel through the Trikdis RF-S8 wireless receiver.

Please note! S8 series wireless devices work only with a Trikdis RF-S8 receiver. The RF-S8 connects over the RS485 bus to the FLEXi SP3 panel (firmware v1.22 or newer), and one RF-S8 is enough per panel. S8 devices communicate at 868 MHz and are therefore not compatible with the 433 MHz LoRa family (RF-LORA, M4).

Compatible devices

Supported Modules

RF-S8

Technical data

Battery type

Built-in 3.7 V 5200 mAh Li-ion battery with solar charging

Battery Life

Approx. 120 days standby

Frequency Band

867-869 MHz

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Related Products

RF-S8 transceiver and S8 detectors – installation and pairing manual

02/11/2026

Installation manual for the Trikdis RF-S8 wireless transceiver and pairing of the S8 detectors with the FLEXi SP3 alarm control panel: wiring, the panel firmware, pairing with the Protegus 2 app, on the web interface and in TrikdisConfig, zone settings, deletion, indicators.

Frequently asked questions

What is a Security panel?

A Security panel or Control panel is the primary controller and supervisor of a security system.

A Security panel or Control panel is the primary controller and supervisor of a security system. It is a computer that arms and disarms the security systems, communicates with each installed component, like sensors and sounds the alarm when a security zone is breached, and optionally communicates with an alarm monitoring company.

What happens if I loose my phone or it gets stolen? Will my alarm system be accessible to them?

Hopefully not. Basically, the phone should be protected from any access by using a password or pattern or fingerprint. In addition, you can use password request when you start the Protegus application and also when you want remotely control something. At least one of them should be active, but two or three of these steps will make it pretty difficult for anyone to access your alarm system!

Can I try Protegus 2 before buying?

Yes: Protegus 2 can be tried on a live demo system, without installation or purchase — from a browser and from the mobile app too. This lets you see in advance what arming, notifications, and system status look like on a working alarm system.

Is there a Wi-Fi Trikdis communicator device?

There is no standalone Trikdis communicator that communicates exclusively over Wi-Fi, but the SIM-card communicators can be extended with the W485 Wi-Fi expansion module. There is also a purely Wi-Fi version, as well as a Wi-Fi + SIM 4G version, of the FLEXi SP3 alarm panel.

How long does Protegus 2 store events?

Protegus 2 typically retains the event list for up to two months; with a large volume of events, this period may shorten to as little as one month.

Why does Protegus 2 not play a sound or vibrate on an iPhone while the app is open?

This is how the iPhone works: while an app is open, it does not receive notifications, neither sound nor vibration.

For Protegus 2 to alert you with sound and vibration, the app has to be closed. It can stay among the recently used apps, that is not a problem. But if it is fully open and you are looking at it, no notification arrives, and you only see the event in the app.

This applies to every device: the iPhone or iPad on which Protegus 2 is currently open will not alert, the others will.

No notifications arrive, or Protegus 2 notifications have no sound. What should I do?

Log out of your Protegus 2 account, then log back in. The app then sets the notification values again, and in most cases this solves the problem.

In addition:

Always keep the app updated to the latest version.
In the app's Notifications menu, switch on the “Play notifications in DND mode” slider. This way the notification plays a sound even when the phone is in Do Not Disturb (DND) mode.

On an iPhone, an open app does not receive notifications, see: Why does Protegus 2 not play a sound or vibrate on an iPhone while the app is open?

All questions