Twlight Switch

THC-109 with 1meter sensor=Auto TypeTHC-109B with 1meter sensor=Auto/Manual Type The product can turn on or turn off light automatically according to ambient-light. Ambient temperature and humidity can't affect it. It is not only convenient but also practical; it can control the load working only at night. It...

Difference: GRB8-01: Illumination Range 1-100Lx GRB8-02: Illumination Range 1-1000Lx & 10-10000Lx , Sepcial Function Zero-Crossing Protection Twilight switch with external fotosensor-Used for switching street illumination and garden lights, illumination of advertisements, shop windows, etc.  Function Features    -Serves to control lights on the basis of ambient light intensity.  ...