Optex good sensors.
Check about with your local council about planning permission if they enable a backlit box, they are technically an illuminated sign an require planning if they have a logo.
It's not something people are aware about, even many installers. Light can be disabled if they will do that.
Found an installer I liked , going with Risco Lightsys plus , optex pir's and telecom backlit Bell box. They only fit Lightsys plus and maintain them as well. hopefully all goes ok.