i dont know clearly but its working is based on the blinking of eye at fatigue detector
Yes, a PIR (Passive Infrared) sensor can work at night. It detects heat emitted by living beings and objects, so it can detect motion even in darkness as long as there are temperature differences between the surroundings and the moving object.
speed sensor on top of transmission,if the speed sensor does not work then the shift inside the trans is broken and trans will need to be rebuilt
BPOs work at night due to different time zones, as they work in countries which have different time zones.
there is no reason what ever for lights not to work at night unless they are controlled by a light sensor. if they are controlled by a light sensor then u need a light sensor. if you have to switch the lights on manually the switch is defrective ,but if this was the case they would not work during the day either
when you blink your brain is saying you eyes are dry and something like that
Because it is day time and the light will only switch on at night? A lot of solar lights have a photo sensor, light sensor, that prevents it from using up energy when it is light out. You can cover up the sensor and it will turn on.
he worked as the drumer of Blink 182
The sensing unit on the fixture is thinking that it is night time. If your fixture has a switch before the light, that has to be left on for the sensor to work, try the following. Turn the fixture off with the switch and leave it off for about ten minutes. Turn the switch back on and the fixture will turn on. If the sensor circuitry is working the fixture will turn off after your "delay on" setting is reached. If there is no switch before the fixture check to see if the sensor has been covered, fooling the sensor into thinking it is night time. If it is a hollow tube type sensor, sometimes hornets will lay an egg in there and cover the sensor with a mud patch. As a last resort change the sensitivity control so that is senses daylight sooner, allowing the sensor to shut off earlier. If none of the above work its time to buy a new sensor. These can be bought individually and installed into the old fixture.
all the small things
how sound sensor work
A magnetic proximity sensor can work as a counter by detecting when a magnetic object moves close to it. Each time the object passes by the sensor, it triggers a count increment. By tracking these counts, the sensor can effectively tally the number of times the object passes by.
The signal flasher relay may be on its way out.