Looking for a Door Sensor

[mav1234]

I am looking for an cheap(er) door sensor. Anyone know of a better component?
http://www.fargocontrols.com/sp_photoelectric_sensor.html

 

[debjit625]

How about using a reed switch ... I have seen many door sensor using reed switch

http://en.wikipedia.org/wiki/Reed_switch

http://www.fargocontrols.com/sensors/magnetic.html

Good Luck

 

[tpetar]

I am looking for an cheap(er) door sensor. Anyone know of a better component?
http://www.fargocontrols.com/sp_photoelectric_sensor.html

You forget to say what is purpose of that? To sense opening door for security purposes or to sense opening door just to sense state of door.

You can use reed relay, described in previous post. Maybe optical barriere with IR diode or laser beam.