Brightness and temperature sensor Ap KNX polar white. Brightness and temperature sensor Ap AP mounting, fastening via mounting bracket, for recording and limit value processing of brightness and temperature values, IP54, 4 independent channels with their own limit values for processing brightness and/or temperature, additional sun protection channel with objects for blind control, with integrated bus coupler, bus connection via connection terminal, brightness measuring range, linear 1 - 100 klx, tolerance ± 5%, temperature measuring range, linear -25 - +55 °C, tolerance ± 20%, min. ± 1 lux.