久久久WWW成人免费无遮挡大片|欧美午夜精品一区二区三区电影|欧美精品乱码视频一二专区|精品国婬伦v无码久久久|精品人妻无码专区视频|

When the smoke intensity reaches a certain limit at an early stage of a fire, the smoke detector would detect it, thus the integrated siren sounds and the warning LED will start to flash red. A white LED acts as emergency light?ing for easy orientation also in the event of power failure. This enables a fire to be detected at an early stage and a warning to be given in good time before dangerous smoke gases are present.

Technical specifications:
Sound pressure level at a distance of 3m in dB(A):    ≥85
Warning light:            Red LED
Emergency light:         White LED
Certificate:               CE, VdS
Protection category :      IP20
Power supply:            1 x 3V, LiMnO2
Typical battery lifetime :   10years
Dimensions (diameter x height, mm):  119 x 50
Weight (g):                         134