The TEP-2.0 tunnel entrance photometer or TEP for Tunnel Entrance Photometers, is a measurement system essential to the energy efficient lighting of tunnel gates (entrances and exits). It is installed in front of the entrance and produces an output current proportional to the luminance in the central field of view around the tunnel gate.
This signal can be used to keep the tunnel lighting at an optimal level relative to the surrounding luminance and save energy.
Two versions are available: 1 single range and 1 double range
| TEP-1.0 | TEP-2.0 | |
| Dynamic | 0 to 10000 cd/m2 | 0 to 10000cd/m² |
| Low Range | N/A | 200 to 500 cd/m² |
| High Range | 1000 to 10000 cd/m2 | 1000 to 10000 cd/m² |
| Housing | IP 65 | IP 65 |
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