Side-by-side
Flexnet Gateway vs GS-21 Underground Sensor
Spec comparison for two products on Aviation Souk. Both compete in perimeter-security.
perimeter-security
Flexnet Gateway
by exensor
Dual-radio base station and repeater linking Flexnet sensor fields to C2 over 10-15 km long-range or 3G/4G/Satcom backhaul.
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 Gateway | GS-21 Underground Sensor |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 2 | 0 |
Specs
Technical specifications.
| Spec | Flexnet Gateway | GS-21 Underground Sensor |
|---|---|---|
| Roles | Base station, repeater (relay), or mobile base | — |
| Short-range radio (to sensors) | 1 km mesh network, 0.5 W output | — |
| Long-range radio (gateway-to-gateway) | Up to 15 km, 10 W output; extended range via several Gateways in repeater mode | — |
| Backhaul | USB to backbone; 3G/4G modem, Satcom, TCP/IP compatible | — |
| Autonomous operation | Deployable as autonomous base without a computer; stores UGS data for later retrieval; system can operate unattended for months | — |
| Battery life | 30 days built-in; external battery, solar panel or fuel cell compatible | 1+ year |
| Encryption | AES-256; data storage and silent-mode capacity | — |
| Dimensions | 115 x 82 x 170 mm | — |
| Weight | 3.2 kg | — |
| Positioning / anti-tamper | GPS self-localisation; anti-tamper functionality | — |
| Operating temperature | -32 to +71 degC | — |
| Environmental standard | MIL-STD-810 | — |
| EMC standard | MIL-STD-461 | — |
| 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 |
| Radio range | — | Up to 35 miles line-of-sight |
| 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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