The air quality sensor measures the current air quality and outputs this as analog variables 0-10 VDC (the smaller the

The brightness sensor measures the current brightness and outputs this as analog variables 0-10 VDC (it is even brighter the

The water leakage sensor detects escaping fluids and, on the one hand outputs an acoustic alarm and on the other

Detects smoke using the light-scattering principle and accordingly actuates an optical (red LED) and audible alarm (buzzer). The alarm is