Apollo ORB-OP-52028-APO Orbis I.S. Optical Smoke Detector - Flashing LED
| Out of stock | Qty | Delivery |
|---|---|---|
| All locations | 0 | Lead time 2 to 6 weeks, estimate only |
- Reduces false alarms
- Recommended for early warning of fire in most areas
- Improved sensitivity to black smoke
- Compensation for slow changes in sensitivity
- Algorithms for reliability of alarm
Frequently bought together

Product details
The Apollo ORB-OP-52028-APO is the intrinsically safe (I.S.) version of the Apollo Orbis optical smoke detector, with a flashing LED, for early warning of slow-burning, smouldering fires.
The Orbis I.S. Optical Smoke Detector works using the light scatter principle and is ideal for applications where slow-burning or smouldering fires are likely.
- Reduces false alarms
- Recommended for early warning of fire in most areas
- Improved sensitivity to black smoke
- Compensation for slow changes in sensitivity
- Algorithms for reliability of alarm
Used for: conventional fire detection where an intrinsically safe Orbis detector is specified, wherever slow-burning or smouldering fires are likely.
Frequently asked questions
Which base does the ORB-OP-52028-APO use?
Orbis I.S. detectors fit the Apollo ORB-MB-50018-APO Orbis I.S. TimeSaver Base (sold separately).
How does the detector sense smoke?
It works on the light scatter principle, with improved sensitivity to black smoke and compensation for slow changes in sensitivity.
Does it help reduce false alarms?
Yes. It uses alarm algorithms for reliability and compensates for slow changes in sensitivity, helping to reduce false alarms.









