Side-by-side
Flexnet UGS System vs GS-21 Underground Sensor
Spec comparison for two products on Aviation Souk. Both compete in perimeter-security.
perimeter-security
Flexnet UGS System
by exensor
Operationally proven wireless unattended ground sensor network for covert detection, classification and identification of threats.
perimeter-security
GS-21 Underground Sensor
by vortex-systems
Buried UGS with external seismic line-string support for extended pedestrian detection along a perimeter
| Cost of ownership | Flexnet UGS System | GS-21 Underground Sensor |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 0 | 0 |
Specs
Technical specifications.
| Spec | Flexnet UGS System | GS-21 Underground Sensor |
|---|---|---|
| Sensing modalities | Seismic, acoustic, magnetic, PIR/thermal, radar, electro-optical (data fusion) | External seismic line strings (pedestrian) + internal magnetic sensor (vehicle presence and travel direction) |
| Network architecture | Self-configuring, self-adaptive wireless mesh; every device is a network node | — |
| Sensor-to-gateway radio range | 1 km | — |
| Encryption | AES-256 | — |
| Node battery life (typical sensor nodes) | 30 days rechargeable, 1-year battery option | — |
| Localisation | Integrated GPS self-localisation per node | — |
| Integration | Standalone or BMS integration; API for third-party sensors | — |
| Environmental standard (nodes) | MIL-STD-810 | — |
| EMC standard (nodes) | MIL-STD-461 | — |
| External sensor inputs | — | PIR (pedestrian/vehicle presence + travel direction) and contact-closure |
| Radio | — | Built-in 5 W VHF, strong foliage penetration |
| Radio range | — | Up to 35 miles line-of-sight |
| Battery life | — | 1+ year |
| Output | — | Mechanical relay to trigger external devices (cameras, lights, sirens) |
| Security | — | Tamper switch |
| Timing | — | Real-time clock; programmable self-test messages and scheduled access windows |
| Compatibility | — | Legacy Vortex and Monitron systems |
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