Side-by-side
GS-21 Underground Sensor vs GSE-DD Dual PIR Direction-Detection Sensor
Spec comparison for two products on Aviation Souk. Both compete in perimeter-security.
perimeter-security
GS-21 Underground Sensor
by vortex-systems
Buried UGS with external seismic line-string support for extended pedestrian detection along a perimeter
perimeter-security
GSE-DD Dual PIR Direction-Detection Sensor
by vortex-systems
Dual passive-infrared sensor that reports direction of travel on two separate paths simultaneously
| Cost of ownership | GS-21 Underground Sensor | GSE-DD Dual PIR Direction-Detection Sensor |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 0 | 0 |
Specs
Technical specifications.
| Spec | GS-21 Underground Sensor | GSE-DD Dual PIR Direction-Detection Sensor |
|---|---|---|
| Sensing modalities | External seismic line strings (pedestrian) + internal magnetic sensor (vehicle presence and travel direction) | — |
| External sensor inputs | PIR (pedestrian/vehicle presence + travel direction) and contact-closure | — |
| Radio | Built-in 5 W VHF, strong foliage penetration | Long-range VHF with adjustable RF output power |
| Radio range | Up to 35 miles line-of-sight | — |
| Battery life | 1+ year | 1 year |
| Output | Mechanical relay to trigger external devices (cameras, lights, sirens) | — |
| Security | Tamper switch | Built-in tamper sensor |
| Timing | Real-time clock; programmable self-test messages and scheduled access windows | — |
| Compatibility | Legacy Vortex and Monitron systems | — |
| Sensing modality | — | Dual passive infrared (PIR only) |
| Coverage | — | Two separate paths monitored simultaneously, with direction of travel for vehicles or pedestrians |
| Sensitivity | — | Independently configurable per sensor channel |
| External input | — | Configurable connector for optional contact-closure sensor types |
| Enclosure | — | Rugged compact fiberglass-reinforced polycarbonate with continuous poured-foam gasket |
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