Manhole Detector

Remote monitoring of premises requesting permanent security

The Manhole Detector is a specifically designed FBG based detector which uses the state of the art optical approach. Under the highest security requirements, it helps you to detect intrusion and vandalism attempts at monitored places. This gives you valuable time to take appropriate action in order to minimize damages to your property and potential profit loss.

  • 100% passive detector without need of power supply
  • Temperature compensation design
  • Universal platform enabling use of additional detector types

Features & Benefits

  • Low operating costs thanks to minimal maintenance and servicing
  • Leverage existing fiber optic network
  • Mounting plates included
  • Advanced customization available

Protected as IP68 rated devices

The IP68 rating guarantees complete dust-tightness and protection against the effects of long periods of immersion in water.

Sensitive sliding touch system

The Manhole Detector features high sensitivity to the variation of applied pressure. It identifies even the slightest intrusion attempts.

Robust aluminium alloy material

Its robust design withstands harsh environmental conditions and also temporal flooding without any damage to the detector's functionality.

Immune to EMI/RFI

The detector enables operation even in harsh environments, as the technology is fully passive, explosion safe and immune to electro-magnetic/radio frequency interference.

Project Requirements

Manhole detector project requirements

Related Products                


  • Security: manholes, handholes, cable entrances, cabinets, pipeline shaft covers, entrance security, vandalism security, water flooding monitoring, cybernetic safety & security
  • Communications: telecommunication networks, data transmission
  • Infrastructure: critical infrastructure and hard to reach, explosive, harsh or hazardous areas
  • Defence industry: military/army, navy, air force

Download files


and we will recommend you the most suitable solution for your project

Items marked with an asterisk (*) are compulsory.

After clicking on "Send message", your message will be sent to our e-mail address. You can expect a reply within 2 working days, but this usually takes only a few hours.

Subscribe to our newsletter

Be the first to receive SAFIBRA latest news, product updates, inspiring success stories, special promotions and upcoming events.

I would like to subscribe



202225. 4.

Invitation to SENSOR+TEST 2022

Let us invite you to visit us at the international SENSOR+TEST 2022 exhibition, which will take place from 10 to 12 May 2022 in Nuremberg.

News archive