This is a Bright Source Non-Corrosive Mounted PIR Sensor. This PIR sensor is IP65 rated (splashproof) meaning it is a great option for most fittings protected from any areas that may get damp or dusty such as warehouses, garages or sheds. On average adding a motion sensor to your lights can save you around 30% on your energy costs. Switch the settings on the sensor to turn the lights on/off at appropriate times to your own personal needs. This batten mounted PIR sensor is simple and easy to fit to most LED or fluorescent tube fittings using the 20mm grommet hole on the end of your fitting. Detection range: 6-8 metres. Time settings - Switch the sensor to turn off if no motion is detected after 5 seconds, 30 seconds, 1 minute, 3 minutes, 5 minutes or 8 minutes Working light - Adjust the sensor to only turn on when the light levels drop to a certain point. Dimensions: 155mm (L) x 90mm (W) x 80mm (H) Rated Load: 800w Max halogen (220-240v/ac) 200w Max fluorescent (220-240v/ac) 400w Max halogen (110-130v/ac) 100w Max fluorescent (110-130v/ac)