The innovative design of the Soteria Dimension Optical Detector differs from standard fire detectors, having no chamber and being flush-mounted.
New optical sensing technology is used to detect smoke particles outside the detector housing.
A combination of Infra-Red (IR) LEDs and photo-diodes identifies smoke particles detected just below the detector housing and initiates an alarm.
Approvals: AS 7240-7.

| Dimensions | ||
| Detector | 140mm Diameter x 38.2mm Depth | |
| With Backbox | 140mm Diameter x 71mm Depth | |
| Weight | ||
| Detector | 148 grams | |
| With Backbox | 273 grams | |
| Materials | ||
| Housing | White Flame-Retardant Polycarbonate | |
| Terminal | Nickle Plated Stainless Steel | |
| 4106-2107 | Soteria Dimension Optical Detector |
| 4106-2108 | Mounting Base |
| 4106-2109 | Soteria Dimension Specialist Optical Detector |