Detectors
Securiton: types, successors and bases
Which Securiton detectors manufactured since 2000 must be replaced, what is still available, which detector replaces older types, when a new base is needed – and what to bear in mind when mixing with Hekatron detectors.
Detector age
How old is the detector – how long has it been in operation?
- Securiton: Rating plate on the underside of the detector with type and date of manufacture or serial number. With SecuriFire, detector data can be retrieved via the panel or SecuriFire Studio.
- Logbook and reports (decisive): The operating time counts from the commissioning of the detector. The date is recorded in the logbook, in the commissioning or acceptance report or in the last replacement report. This gives the years and months in operation.
- Type plate on the detector: The label (usually on the underside or side of the detector, visible after twisting it out of the base) shows the type, serial number and date of manufacture or a date code (e.g. year/calendar week). If no commissioning date is documented, we take the cautious approach of calculating from the date of manufacture.
- Reading out via the panel: With many addressable loop detectors, detector data such as serial number, date of manufacture, degree of contamination and – depending on the system and software version – operating hours can be retrieved via the panel’s operating unit or programming software. We do this during the survey using your programming file.
This determines the replacement interval under DIN 14675: as a rule 5 years, or 8 years for detectors with contamination compensation and testing in accordance with the manufacturer’s specifications – details under Deadlines & standards. Send us a photo of the type plate and we will determine the age for you.
Securiton Deutschland
Which Securiton detector is installed at your site?
Securiton systems with fire alarm control panels SecuriFire 500, 1000, 2000 or 3000 work with the addressable loop detectors of the SecuriStar series on the SecuriLine eXtended loop. Current detectors have an “X” in the type designation (e.g. MCD 573X, CCD 573X). Older systems with SecuriLine contain first-generation SecuriStar detectors such as SCD 573, MCD 573 or STD 531. The type designation is printed on the rating plate on the underside of the detector.
Images: Securiton Deutschland. Examples shown; housing colour and labelling may vary by type.
No longer available
Older Securiton detectors and their successors
According to Securiton, the MCD 573X is compatible with the earlier SecuriStar series and can replace it without any change to the system or installation. Depending on the application, it is programmed as a smoke, heat or multi-criteria detector.
| Image | Old detector | Old type | Available? | Alternative detector | New base? |
|---|---|---|---|---|---|
| Optical smoke detector SecuriStar, 1st generation (SecuriLine; EN 54-7, VdS G 208196) | SCD 573 | no – discontinued | MCD 573X (programmed as smoke detector)¹ | usually not¹ |
| Multi-criteria detector smoke/heat SecuriStar, 1st generation | MCD 573 | no – discontinued | MCD 573X¹ | usually not¹ |
| Heat detector SecuriStar, 1st generation | STD 531 | no – discontinued | MCD 573X (programmed as heat detector A1, A2 or B)¹ | usually not¹ |
| Multi-criteria detector with sounder (EN 54-3/-5/-7/-29) | MCD 573X-S | no – replaced in the current range | MCD 573X-SCT (loop-powered) or MCD 573X-SES (external power supply) | no – USB 502 remains |
| Multi-criteria detector with sounder and voice output | MCD 573X-SP | no – replaced in the current range | MCD 573X-SPCT or MCD 573X-SPES | no – USB 502 remains |
¹ According to Securiton product information MCD 573X (819255, 01/2019) and catalogue: “100% backward compatible” with MCD 573 and STD 531, replacement without any change to the installation. We check, using your detector list and the panel software, whether the existing base USB 501 remains or a USB 502 is fitted.
Current series
SecuriStar and special fire detectors: same detector, same base
These Securiton detectors are available. When replaced on schedule, the detector is exchanged for the same type; the existing base remains. All detectors listed here are approved to EN 54.
| Image | Detectors | Item no. | Available? | Replace with | New base? |
|---|---|---|---|---|---|
| Multi-criteria detector MCD 573X (smoke/heat; EN 54-5/-7/-29, VdS G 210152) | on request | yes | same type | no – USB 502 remains |
| MCD 573X CP – coated for damp areas | on request | yes | same type | no – USB 502-3 remains |
| MCD 573X MC – colour version (RAL) | on request | yes | same type | no – USB 502 MC remains |
| MCD 573X-SCT with sounder (loop-powered; EN 54-3/-5/-7/-29, VdS G 213053) | on request | yes | same type | no – illuminated ring base USB 502-20 optional |
| MCD 573X-SES with sounder (external power supply) | on request | yes | same type | no |
| MCD 573X-SPCT with sounder and voice output (loop-powered) | on request | yes | same type | no |
| MCD 573X-SPES with sounder and voice output (external power supply) | on request | yes | same type | no |
| Multi-criteria detector CCD 573X (smoke/heat/CO; EN 54-5/-7/-26/-29/-30), service life 8 years | on request | yes | same type | no – USB 502 remains |
| – | Smoke detector MMD 130 Ex-i for Ex zones 1 and 2 (conventional) | on request | yes | same type | no – USB 502-7/-8 Ex-i remains |
| – | Ventilation duct detector LKM 593X (in LKM-Set housing) | on request | yes | same type | no – housing remains |
| Aspirating smoke detector SecuriRAS ASD 532 (EN 54-20) | on request | yes | measuring chamber/detector according to manufacturer’s specifications | – |
| Aspirating smoke detector SecuriRAS ASD 535 (EN 54-20) | on request | yes | measuring chamber/detector according to manufacturer’s specifications | – |
| Aspirating smoke detector SecuriSmoke ASD 2000, 1-, 2- and 4-channel (EN 54-20) | on request | yes | measuring chamber/detector according to manufacturer’s specifications | – |
| – | Linear beam smoke detector SecuriBeam BSD 535 with reflector (EN 54-12) | on request | yes | same type | – |
| – | Linear beam smoke detector SecuriBeam ILIA S/E (EN 54-12) | on request | yes | same type | – |
“On request”: Securiton does not publish order numbers; we will provide them with our quote. For aspirating smoke detectors, the replacement interval applies to the measuring chamber or sensor technology.
Bases
Securiton bases USB 501 / USB 502: when a new base is needed
All X-generation SecuriStar detectors are screwed into bases of the USB 502 series. If a USB 502 is already installed, it remains during replacement.
| Image | Bases | Item no. | Suitable for | Note |
|---|---|---|---|---|
| – | USB 501-1, universal base, 1st SecuriStar generation | on request | SCD 573, MCD 573, STD 531 | check reuse with MCD 573X on a case-by-case basis |
| – | USB 502-1, surface-mounted (IP 44) | on request | MCD 573X, CCD 573X | remains during replacement |
| – | USB 502-2, flush-mounted (IP 44) | on request | MCD 573X, CCD 573X | remains during replacement |
| – | USB 502-3, surface-mounted for damp areas (IP 54) | on request | MCD 573X CP | remains during replacement |
| – | USB 502-4, surface-mounted for concrete mounting | on request | MCD 573X, CCD 573X | remains during replacement |
| – | USB 502-5, conduit mounting | on request | MCD 573X, CCD 573X | remains during replacement |
| – | USB 502-6, surface-mounted without loop contact | on request | MCD 573X, CCD 573X | remains during replacement |
| – | USB 502-1 MC / 502-6 MC, colour version | on request | MCD 573X MC | remains during replacement |
| – | USB 502-20, with illuminated ring | on request | MCD 573X-SCT/-SPCT | optional |
| – | USB 502-7 Ex-i / USB 502-8 Ex-i, without loop contact | on request | MMD 130 Ex-i | remains during replacement |
Base types according to the Securiton product catalogue. The base designations USB 502 are also used by Hekatron – see below.
Compatibility
Securiton and Hekatron: what fits together?
Securiton and Hekatron both belong to the Swiss Securitas Group and partly use the same technology. For detector replacement, this means:
- Same base family: SecuriStar detectors (…573X) and Hekatron Integral detectors (…533X) are both screwed into bases of the USB 502 series. A base change is therefore often not necessary when switching manufacturer.
- Detectors are system-specific: MCD 573X and CCD 573X are designed for SecuriFire with SecuriLine eXtended, MTD 533X and CMD 533X for Hekatron Integral. Despite the identical base, they must not be swapped for one another without approval from the panel manufacturer – protocol, programming and VdS system approval differ.
- Shared special fire detectors: The Ex smoke detector MMD 130 Ex-i with base USB 502-7/-8 Ex-i and the linear heat detector ADW 535 are used in both system worlds; according to Securiton, the ADW 535 is connected to Integral via the XLM 35 module.
- Hekatron SecuriPro: Hekatron discontinued the SecuriPro system in February 2017. Hekatron recommends switching to Integral IP; according to Hekatron, the existing detectors can continue to be used.
Hekatron detectors and bases with order numbers: Hekatron page. Which detector is approved for your panel is determined by the panel manufacturer’s compatibility list – we check this for you.
Special detectors
Securiton: wireless, Ex, ventilation duct and linear detectors
Ex smoke detectors (MMD 130 Ex-i), ventilation duct detectors (LKM 593X), aspirating smoke detectors and linear beam smoke detectors are already listed in the table “Current series”. In addition:
| Image | Detectors | Item no. | Available? | Replace with | Note |
|---|---|---|---|---|---|
| – | Wireless fire detection system SecuriAir – wireless detectors for SecuriFire | on request | yes | same type; batteries according to manufacturer’s specifications | via wireless gateway on the SecuriLine eXtended |
| – | Linear heat detector SecuriHeat ADW 535 / SecuriHeat LIST (EN 54-22) | on request | yes | according to manufacturer’s specifications | ADW 535 on Integral via XLM 35 |
| – | Flame detectors (special fire detectors) for SecuriFire | on request | yes | same type | – |
Types according to the Securiton website and SecuriFire 2023 brochure.
Important
Before ordering
- Check the panel: X-generation SecuriStar detectors run on SecuriFire 500 to 3000 via SecuriLine eXtended. With older SecuriLine systems, a software update of the panel may be required. We check this using your detector list and programming file.
- Replacement interval: Smoke and multi-sensor detectors after 5 years at the latest, or after 8 years with automatic contamination compensation and testing in accordance with the manufacturer’s specifications – details under Deadlines & standards.
- Change of detector series: New bases, different detector types or a changed number of detectors may constitute a significant modification – see expert inspection and fire brigade.
- EN 54 tested (as of 19.10.2026): All SecuriStar detectors listed as available are certified to EN 54-5/-7/-29 (MCD 573X-S… additionally to EN 54-3, CCD 573X additionally to EN 54-26/-30), the aspirating smoke detectors to EN 54-20 and the linear beam smoke detectors to EN 54-12. The detectors that are no longer available were approved under the EN 54 or VdS rules in force when they were introduced; since 2008, CE marking to EN 54 has been mandatory for new detectors – which is why we only name currently certified types as replacements.
- Installation by a specialist company only: Replacement and repair of detectors in fire alarm systems required under building law are part of maintenance and are reserved for a specialist company certified to DIN 14675 – even if you only buy the detectors from us. Details under Legal situation.
- Order numbers from Securiton will be provided with our quote – Securiton does not publish article numbers.
- Image credits and trademarks: Product images © Securiton. The images serve solely to identify the detectors. Brand and product names are the property of their respective owners. Further details in the Legal notice.
Not sure which detector is installed at your site?
Send us your detector list or a photo of the type plate. We will name the suitable replacement and tell you whether new bases are needed.