DB485197 Temperature & Humidity Sensor

Ideal for Tunnel Equipment Room Monitoring

A metro group operates a 35 km line with 12 underground stations. Tunnel equipment rooms need stable temperature and humidity to ensure ventilation, power and communication systems work reliably.
Conventional sensors had no networking, needed manual inspection (over 2 hours daily), and showed large errors in high temperature and high humidity. This led to poor control and even signal outages.
The group chose the DABECO DB485197 humidity and temperature sensor.

Key Advantages
RS485 & Modbus for Centralized Monitoring
98 units deployed in 36 rooms. Real-time remote monitoring saves 1.5 labor hours daily, with data logged every 10 minutes.
High Accuracy in Harsh Conditions
±0.2°C / ±2.0% RH at 25°C. Stable performance at high temperature and humidity enables precise HVAC control.
Wide Voltage & Dust Resistance
12–30VDC input, dust-tolerant, low maintenance.
Results After 6 Months
Accuracy improved from 82% to 99.2%
No environment-related failures
AC & dehumidifier runtime reduced by 15% and 20%
Monthly energy cost reduced by ~¥300 per station
Alarm response time improved by 83%
Engineer feedback:
DB485197 solved our biggest challenges in centralized monitoring and accuracy. Tunnel operation is now much more stable.