All Forums  Electronics  Other Circuits  door alarm or window alarm, non-proximity

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by seg[/i] [br]Hi, I have a freezer door that sometimes doesn't close all the way, and I'm trying to find out what kind of switch or sensor I can install on the door to alarm when the door is open, even open just a couple millimeters. Most door alarms are proximity switches, so the door has to be open at least 1/2" for the alarm to trip. I need a more sensitive alarm: it should trip if contact is broken. (It's okay if the alarm goes off whenever the door is open; I'm hooking this switch up to an alarm system with a time-delay). Any suggestions would be greatly appreciated, thank you! [/quote]    Insert an Image File (GIF, JPG, JPEG, BMP, ZIP, PNG) Check here to include your profile signature.