ISN-SM Seismic Detectors

ISN-SM Seismic Detectors

  • 24-hour surveillance of vault walls and doors, safes, night safes, and automatic teller machines
  • Sensitivity settings using DIP switches
  • SENSTEC® sensor and signal processing system based on microcontrollers
  • Low profile design

When cutting and drilling through materials such as concrete, steel, or synthetic reinforcements, deviations from the structures' normal vibration pattern ensue. The SENSTEC sensor converts vibration deviations into electrical signals. The digital processing in the seismic detector analyzes the signals and compares them to a frequency range typical of tools used to break into safes, night safes etc. If the signals fall within this frequency range, the seismic detector transmits an alarm via a relay contact.

Compatibility: Better than EN 50130-4
HF interference tolerance (EN 61000-4-3): No alarm or setup at critical frequencies within a range of 1 MHz to 1000 MHz at > 30 V/m.
   
Dimensions: 8.9 cm x 8.9 cm x 2.2 cm    
Weight: 0.320 kg
   
Humidity (EN60721): Up to 95% relative humidity, not condensing
Housing protection class (EN 60529, EN 50102): IP435
Temperature (operating): -40 °C to +70 °C
Temperature (storage): -50 °C to +70 °C
   
For the test: Low < 1.5 VDC High > 3.5 VDC
Test duration (including test transmitter ISN-GMX-S1): ≤ 3 sec
ISN-SM-50: 4 m radius = 50 m2 monitoring area
ISN-SM-80: 5 m radius = 80 m2 monitoring area
   
Alarm relay (changeover contact): Contact closed in standby mode (opened in the event of an alarm) designed for 30 VDC, 100 mA, resistance < 20 Ohm
Alarm holding time: Approx. 2.5 sec
Tamper switch/wall tamper: Tamper contact closed in standby mode (opened in the event of tampering) designed for 30 VDC, 100 mA, resistance < 45 Ohm
Test connection: Analog integration signal
   
Power consumption at 12 VDC: Alarm: 6 mA
Standby: 3 mA  
Power supply monitoring: 8 VDC to 16 VDC (12 V nominal)
Alarm: < 7 VDC  
   
For reduction: Low < 1.5 VDC High > 3.5 VDC
Reduction to: 1/8 of current setting
SENSTEC® is a registered trademark of Siemens Building Technologies.