Side-by-side
MICALERT Microphonic Rigid Fence Sensor Cable vs GS-21 Underground Sensor
Spec comparison for two products on Aviation Souk. Both compete in perimeter-security.
perimeter-security
MICALERT Microphonic Rigid Fence Sensor Cable
by rbtec
Passive microphonic sensor cable for rigid metal fences — palisade, ornamental iron and welded panels.
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 | MICALERT Microphonic Rigid Fence Sensor Cable | GS-21 Underground Sensor |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 0 | 0 |
Specs
Technical specifications.
| Spec | MICALERT Microphonic Rigid Fence Sensor Cable | GS-21 Underground Sensor |
|---|---|---|
| Detection principle | Passive microphonic sensor cable with frequency-discrimination algorithm | — |
| Target fence types | Metal fence, palisade and ornamental, wrought iron, aluminum (rigid fences); combinable with crash-rated fencing | — |
| Max cable per processor | 600 m (2,000 ft) | — |
| Max cable per zone | 300 m (1,000 ft) | — |
| Zones per processor | 2 | — |
| Sensitivity adjustment | 22 levels per zone on board; 500 levels via software | — |
| Calibration | Self-calibrating | — |
| Zone arm/disarm | 8x via jumper | — |
| Sensor cable | 3 mm outer diameter, black, UV-rated; attached directly to the fence without conduit | — |
| Cable spool lengths | 75 m / 152 m / 305 m (250 / 500 / 1,000 ft), pre-cut | — |
| Ready-to-install kits | 6 configurations, single or dual zone, 75-610 m (250-2,000 ft); each kit includes fence processor (LPU) + optional sensor cable + 2 EOLs | — |
| Kit part numbers | RB-MIC1Z250, RB-MIC2Z250, RB-MIC1Z500, RB-MIC2Z500, RB-MIC1Z1000, RB-MIC2Z1000 | — |
| Processor | LPU-402 (board RB-LPU402; complete kit with enclosure + 2 EOL: RB-ELC2ZKIT) | — |
| Alarm inputs | 2/4 MICALERT sensor cable inputs; 4 intrusion + line-monitored accessory inputs (magnets, contacts, microwaves, motion detectors); 1 tamper switch | — |
| Alarm outputs | 8 dry-contact relays, NO/NC, rated 1 A @ 12 VDC; plus 1x tamper switch relay and 1x power outage relay | — |
| Connectors | Sensor input 8x screw terminal (pair per zone); alarm output 8x screw terminal (pair per zone) | — |
| Communication to PC | USB-C; optional RS485 or IP | — |
| Lightning protection | 2-layer surge protection; gas discharge devices on all inputs/outputs and communication lines | — |
| Power | 12-24 VDC, 300 mA @ 12 VDC | — |
| Operating temperature | -40°C to +105°C | — |
| Humidity | Up to 98%, non-condensing | — |
| Enclosure | NEMA 4X, IP-66; 24 x 19.5 x 7.0 cm; 1 kg | — |
| Accessories | Stainless steel cable ties + installation tools (RB-RBTIES610), end-of-line termination (RB-RBMCTR), splice/extension unit (RB-RBMCTXT), gate connector (RB-GATECONN), sliding gate kit (RB-SLIDINGKIT) | — |
| Sensor cable warranty | 2 years | — |
| 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 |
| 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 |
Decide
Ask Aviation Souk to pick for your tender.
The AI weighs both products against your specific brief — airport, certifications, lead time, budget — and tells you which fits.
Ask the AI →