Easyclick intermediate frame, green luminescent, for retrofitting AURA Easyclick wall transmitters, the intermediate frames can be easily replaced. , Luminescent luminescent crystals (free of any radioactivity) are charged by the ambient light and release the energy absorbed in the dark in the form of visible light. The best effect is achieved with short-wave light (ideally sunlight or light with a high UV content). Guideline: When exposed to an intensity of 400 lux (medium exposure) for 20 minutes with a lamp (standard light type D65) that is close to daylight, after 12 hours the luminescence density is higher than the visibility limit of 0.3 mCd/m2 defined by DIN.