Detectors
Replacing Telenot detectors: types, successors and bases
Which Telenot detectors manufactured from 2000 onwards must be replaced, what is still available, which detector replaces older types and when a new base is needed – with the manufacturers’ order numbers.
Detector age
How old is the detector – how long has it been in operation?
- Telenot: Rating plate with item number and date of manufacture or date code. On hifire systems, detector data can be retrieved via the control panel or the configuration software.
- 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.
Identify
Which Telenot detector do you have installed?
Telenot fire detection systems come in two generations: hifire 4000 BMT / hifire 4400 / hifire 4100 XS with the loop Loop 4000 (detectors e.g. 4400IT, 4401IT, 4402, 3309) and older systems with Loop 3000 (detectors PL 3302 …) as well as conventional detectors of the series CT 3002 and CT 3005. The type designations of the Loop 3000 and CT detectors follow the Detectomat naming system. The Telenot item number has nine digits (1000…).
Images: Telenot; image “CT series”: Detectomat (identical design, example). Housing colour and labelling may vary by type.
No longer available
Older Telenot detectors (Loop 3000): successors and bases
Detectors of the Loop 3000 system are listed by Telenot as phase-out products. Whether identical Loop 3000 detectors can be used in your system or whether switching to Loop 4000 makes sense depends on the control panel – we check this in advance.
Loop 3000 (addressable loop)
| Image | Old detector | Old item no. | Available? | Alternative detector | New base? |
|---|---|---|---|---|---|
 | Multi-sensor detector optical/heat PL 3302 OTi (Loop 3000, design variant 2) | 100078744 | no – discontinued | identical Loop 3000 detector (cf. Detectomat PL 3300 OTi, 33990)¹ or switch to Loop 4000 (4400IT) | on request¹ |
| Optical smoke detector PL 3302 O (Loop 3000) | see rating plate | no – discontinued | identical Loop 3000 detector (cf. Detectomat PL 3300 O, 33974)¹ | on request¹ |
| Heat detector PL 3302 T (Loop 3000) | see rating plate | no – discontinued | identical Loop 3000 detector (cf. Detectomat PL 3300 T, 33982)¹ | on request¹ |
¹ The type designations of the Telenot Loop 3000 detectors correspond to the Detectomat PL 3300 series. Whether a Detectomat detector is approved for your Telenot control panel and whether the base can remain is something we clarify before ordering.
Current series
Loop 4000 and conventional detectors: same detector, same base
These Telenot detectors are available. When replaced on schedule, the detector is exchanged for the same type and the existing base remains.
| Image | Detectors | Item no. | Available? | Replace with | New base? |
|---|---|---|---|---|---|
| Multi-sensor detector optical/heat 4400IT, white (Loop 4000) | 100078340 | yes | same type | no – base remains |
| Multi-sensor detector optical/heat 4400IT, black (Loop 4000) | 100078555 | yes | same type | no |
| Optical smoke detector 4401IT (Loop 4000) | 100078548 | yes | same type | no |
| Multi-sensor detector CO/optical/heat 4402 (Loop 4000) | 100078341 | yes | same type | no |
| Heat detector 3309, encapsulated (Loop 4000) | 100078510 | yes | same type | no |
| Heat detector 4409, encapsulated (Loop 4000, A1/A2S/BS) | 100078511 | yes | same type | no |
 | Heat detector 4318W (conventional, comfire 80 / hifire 4400) | 100078342 | yes | same type | no – base 100078279 remains |
| Optical smoke detector 4452W (conventional, comfire 80 / hifire 4400) | 100078343 | yes | same type | no – base 100078279 remains |
| Optical smoke detector CT 3002 O (conventional, design variant 2) | 100078762 | yes | same type | no |
| Heat detector CT 3002 T (conventional, design variant 2) | 100078763 | yes | same type | no |
| Multi-sensor detector CT 3002 OT (conventional, design variant 2) | 100078764 | yes | same type | no |
| Optical smoke detector CT 3005 O, white (conventional, design variant 5) | 100078758 | yes | same type | no |
| Optical smoke detector CT 3005 O, silver (conventional, design variant 5) | 400078758 | yes | same type | no |
| Optical smoke detector EX 2840 (via EX barrier 2842) | 100078362 | yes | same type | no – connection base EX 2843 remains |
| Heat detector EX 2841 (via EX barrier 2842) | 100078363 | yes | same type | no – connection base EX 2843 remains |
Telenot item numbers according to the dealer database (IGS Hagen). The CT 3002/3005 detectors are supplied without a detector base.
Bases
Telenot bases: when a new base is needed
When the detector is replaced with the same type, the base remains. New bases are needed when switching from Loop 3000 to Loop 4000 – in that case the detectors, bases and panel programming all change.
| Image | Bases | Item no. | Suitable for | Note |
|---|---|---|---|---|
 | Detector base for conventional detectors 4318W / 4452W | 100078279 | 4318W, 4452W (comfire 80, hifire 4400) | remains during replacement |
| Connection base EX 2843 | 100078365 | 2840, 2841 | remains during replacement |
| Loop 4000 detector base (e.g. 4412F, base with sounder 4479) | on request | Loop 4000 detectors | remains during replacement |
Special detectors
Telenot: wireless, Ex, duct and linear detectors
In addition to point-type detectors, Telenot offers linear beam smoke detectors, aspirating smoke detectors and linear heat detectors; the Ex detectors 2840/2841 are listed in the “Current series” table. Telenot does not list wireless detectors for fire alarm systems or duct detectors on its website.
| Image | Detectors | Item no. | Available? | Replace with | Note |
|---|---|---|---|---|---|
 | Linear beam smoke detector FireRay 5000, 8–50 m (up to 100 m with 3 extension reflectors), automatic realignment (EN 54-12) | 100078927 | yes | same type | remote control unit remains |
 | Aspirating smoke detector SecuriRAS ASD 535 or ASD 532 (EN 54-20) | 100078032 (ASD 535) | yes | Detector module as specified by the manufacturer | pipe network remains |
| – | Linear heat detector SKM-03.2 B, sensor cable up to 300 m, connected via Loop 4000 (EN 54-22) | 100078581 | yes | according to manufacturer’s specifications | – |
| – | Ex smoke detector 2840 / Ex heat detector 2841 with Ex base 2843 | 100078362 / 100078363 | yes | same type | see table “Current series” |
Item numbers according to the TELENOT website (fire protection product solutions, as of 10/2026).
Important
Before ordering
- Check the panel: Whether Loop 4000, Loop 3000 or conventional detectors can be operated on your Telenot control panel (hifire 4000 BMT, hifire 4400, hifire 4100 XS, comfire 80) depends on the panel and its programming. 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 Telenot detectors listed as available are certified to EN 54-5 or EN 54-7; Ex detectors additionally have ATEX approval. The detectors that are no longer available were approved under the EN 54 or VdS rules applicable when they were introduced; since 2008, CE marking to EN 54 has been mandatory for new detectors – which is why we only list 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 are Telenot item numbers (sources: telenot.com, IGS Hagen dealer database, last updated: 18.10.2026).
- Image credits and trademarks: Product images © Telenot. The images serve solely to identify the detectors. Brand and product names are the property of their respective owners. Further information 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.