House number light l 820 led with ihf sensor advanced technology with a very attractive modern design are the attributes that distinguish the hf series of steinel the sensor could be installed in a concealed manner for the first time so that nothing distracts the minimalist design of the wall light long lasting leds up to 30 years lifetime indicate that replacement of the light bulb is not required the time setting can arbitrarily be chosen in the range between 5 seconds and 15 minutes th