Classic Series · Hardwired · 360° Ceiling · 21m Range
360° Ceiling PIR
Bosch DS939 360° Ceiling PIR — Australian Stock & 3-Year Warranty
The Bosch DS939 (BOSDS939) is a hardwired Classic Series 360° ceiling PIR built for large, high-ceiling spaces. It delivers a wide 360° x 21 m detection area from mounting heights up to 6.1 m, making it ideal for warehouses, showrooms, foyers and open-plan commercial areas. Fully adjustable optics, a hinged chassis and base plate, and a high-efficiency LED with light-pipe for easy walk-testing streamline installation, while Bosch First Step Processing (FSP) keeps detection accurate and false alarms low. Backed by a 3-year Australian warranty.
High-Ceiling Coverage
A wide 360° x 21 m pattern from mounting heights up to 6.1 m suits large open commercial spaces.
Fully Adjustable Optics
Fine-tune the coverage pattern for full integrity and to match the exact room layout.
Fast Installation
Hinged chassis and base plate plus a bright walk-test LED and light-pipe speed up commissioning.
First Step Processing
Bosch FSP analyses the first movement instantly for reliable, false-alarm-resistant detection.
Technical Specifications
| Model / SKU |
Bosch DS939 (BOSDS939) |
| Series |
Classic Series |
| Detection Pattern |
360° x 21 m (10.5 m radius) |
| Mounting |
Ceiling |
| Installation Height |
3 – 7.6 m (up to 6.1 m recommended) |
| Alarm Output |
SPDT (NC/NO) |
| Tamper |
N/C |
| Input Voltage |
9 – 15 VDC |
| Current Consumption |
12 – 39 mA |
| Operating Temperature |
-40 – 49 °C |
| Dimensions (Ø x H) |
178 mm x 89 mm |
| Warranty |
3 Years (Australia) |
Downloads
Frequently Asked Questions
Which alarm panels work with the DS939?
Its SPDT (NC/NO) output suits any Bosch Solution 2000/3000/6000 or G-Series panel and virtually any conventional hardwired zone.
How high can it be mounted?
From 3 m up to 7.6 m, with 6.1 m recommended for the full 360° x 21 m pattern.
Is it wired or wireless?
The DS939 is hardwired and powered by 9–15 VDC from the panel.
Can I adjust the coverage pattern?
Yes — the fully adjustable optics let you shape and aim the detection area to match the room.
How do I walk-test it?
A high-efficiency LED and light-pipe make the walk-test indicator clearly visible across large spaces.
Is the DS939 pet-friendly?
No, it is a standard commercial PIR; for pet immunity choose a Bosch Pro Series or RADION pet-immune detector.
