ES-S220 Tunnel Luminance Monitor

The ES-S220 Tunnel Luminance Monitor fully meet the requirements for comprehensive tunnel lighting control. Controllers with preset modes automatically switch lighting based on measured light values ​​and predefined parameters, ensuring optimal brightness levels for the tunnel. The design of the ES-S220 series detectors fully complies with CIE standards for tunnel lighting measurement and the *Code for Design of Ventilation and Lighting of Highway Tunnels*; furthermore, the overall design is robust enough to withstand harsh outdoor operating environments.

Installation:

The ES-S221 tunnel light intensity/color temperature detector is mounted on the sidewall inside the tunnel, at a distance from the entrance equal to the tunnel’s clear height. To prevent damage from accidents or vehicle wreckage, the ES-S221 tunnel luminance detector should be installed at a height of approximately 4 meters.

The ES-S222 tunnel illuminance detector is best installed at a location corresponding to the tunnel portal, at a distance from the entrance equal to the stopping sight distance. It features high reliability, low maintenance requirements, advanced microprocessor technology, fully digital operation, and ease of installation and commissioning.