Hello from TS Korea. We installed oxygen plus temperature/humidity monitoring for an underground research tunnel. The LED board sits within about 50 m of the detector and mains power was already available.

Customer drawings marked both the tunnel face and instrument locations, so cable pulls were straightforward.

Portal photo showing the future LED mounting point.

Inside the tunnel the sensor location stays within 50 m of the display; electrical trays simplified installation.

After anchoring the probe, we installed a FIX800 oxygen alarm plus a DST1000 ambient transmitter for temperature and humidity.

Cabling progressed toward the portal LED showing O₂, temperature, and humidity on three channels.

With power applied the board mirrors live values so supervisors can assess tunnel air before crews enter. Share your span list, cable length, indoor/outdoor preference, and we will duplicate this architecture. TS Korea.