PIR MOVEMENT LIGHT

      The unit consists of a passive infrared detector. The sensor detects the infrared rays emitted by humans. The sensor o/p is connected to a circuit, which switches on a light when infrarred rays are detected. The unit when switched on becomes active after 30 seconds. During this time it does not detect infrared rays. After 30 second if any person enters the room the infrared rays emitted by the person are detected & light operates within 20 seconds. The light operates for 1 minute & goes off & the unit is ready to dectect further interference. If the person does not vacate the room the light continous. The unit is useful for a hall of 25' x 25' if fixed at one corner. The unit has a master key to switch on & off.