Conventional Detection Vision Range
Vision 2020PT Photo-Thermal Detector | EN54 Parts 5 & 7
- Detector type
- Optical Heat Detector
- Operating voltage
- 14 to 28VDC (Nominal 24VDC)
- Maximum standby current
- 75μA @ 24VDC (@ 25ºC)
- Maximum alarm current
- 70mA @ 28VDC
- Quiescent current
- 60µA Typical @ 24VDC, 25°C
- Application temperature range
- –30ºC to +70ºC (see note 1)
- Max ambient operating temperature note
- To avoid unwanted alarm conditions being triggered by class A1R detectors, the maximum ambient operating temperature should not exceed 45ºC
You will also need
Needed to install, power or certify this product.
Standard detector mounting base for Vision detectors
2020B Standard Base – adds 9.5mm to detector height
Detector mounting base fitted with schottky diode. For Vision detectors
2020BSD Standard Base with Schottky diode
DEEP BASE SCHOT DIODE VISION S
2020DBSD Deep Base with Schottky diode
Overview
What it is and how it fits the system.
The 2020PT is a conventional multi-functional photo-thermal (optical heat) fire detector from the Vision range, combining an optical chamber and heat element with sophisticated algorithms for quick, accurate fire detection. It operates from 14 to 28VDC (nominal 24VDC) with a 60µA typical quiescent current, 75µA maximum standby current and 70mA maximum alarm current at 28VDC, across an application range of -30°C to +70°C. The 102mm-diameter head stands 40.5mm high and works at 5 to 95% RH non-condensing.
Technical overview
The 2020PT is a Conventional Vision-range optical heat detector combining photoelectric and thermal sensing elements with intelligent algorithms for reliable fire detection. It operates from 14 to 28VDC (nominal 24VDC) with a typical quiescent current of 60µA and maximum standby current of 75µA at 24VDC, 25°C, rising to 70mA alarm current at 28VDC. Designed for demanding environments, it functions across –30°C to +70°C and 5 to 95% RH non-condensing, though ambient temperature should not exceed 45°C to prevent unwanted alarms from class A1R detectors.
Measuring 102mm in diameter and 40.5mm in height (plus 9.5mm with standard base), the detector weighs 78g (plus 45g for base) and is constructed from ABS material approximating RAL9016. It supports wire gauges from 0.4mm² to 2.0mm² and is certified to EN54 Parts 5 and 7, with LPCB and CE approvals. Compatible bases include the 2020B, 2020BSD, 2020DB, and 2020DBSD, while the 2020LT laser tool enables remote testing. Optional remote LED annunciators can repeat alarm signals, and it integrates with conventional fire alarm panels via approved bases. Physical wiring details are in the installation manual.
Specifications
Full technical data for this part.
| Detector type | Optical Heat Detector |
|---|---|
| Operating voltage | 14 to 28VDC (Nominal 24VDC) |
| Maximum standby current | 75μA @ 24VDC (@ 25ºC) |
| Maximum alarm current | 70mA @ 28VDC |
| Quiescent current | 60µA Typical @ 24VDC, 25°C |
| Application temperature range | –30ºC to +70ºC (see note 1) |
| Max ambient operating temperature note | To avoid unwanted alarm conditions being triggered by class A1R detectors, the maximum ambient operating temperature should not exceed 45ºC |
| Humidity | 5 to 95% Relative Humidity (non-condensing) |
| Height | 40.5mm (plus 9.5mm for standard base) |
| Diameter | 102mm |
| Weight | 78g (plus 45g for standard base) |
| Max wire gauge for terminals | 0.4mm2 to 2.0mm2 |
| Colour | Approximates RAL9016 |
| Material | ABS |
Specifications sourced from manufacturer documentation.
Specifications per manufacturer documentation, subject to change — E&OE. Spotted an inaccuracy? Let us know