20724105 LM-TLM External daylight sensor with bus connection for monitoring daylight conditions with 8 balanced photocells; the sky data is made available to automation devices used for daylight-based control of artificial light and blinds in a building; light sensors are V-lambda-adjusted; the built-in temperature-controlled heating prevents condensation at the sensor cover; fixtures suitable for installation on mounting pole (diameter 42 … 50 mm); housing made of acrylic glass, 1.4571 stainless steel