{"product_id":"momentary-on-off-round-key-lock-switch-12mm-diameter","title":"Momentary On\/Off Round Key Lock Switch - 12mm Diameter","description":"\u003cp\u003eMAJOR KEY ALERT  we now stock 'Key Lock Switches'! These mechanical switches don't use a button, a lever, or a magnet to open and close the contacts. Instead, a literal key is used. This low-cost but effective key lock switch is nice and compact: you only need to drill a 12mm \/ 0.5\" diameter hole in your mounting plate.\u003c\/p\u003e \u003cp\u003eInsert the 'bike lock' style key and rotate it one turn clockwise. Now, the two contacts on the back are electrically connected and locked. Rotate it back counter-clockwise to disconnect the switches. This makes for an excellent 'On-Off' switch that requires the key to activate.\u003c\/p\u003e \u003cp\u003eThis key lock is 'momentary' style - because you cannot remove it once it's turned On. You have to rotate back to Off to remove the key. We also have a \u003ca href=\"\/zh\/products\/on-off-round-key-lock-12mm-diameter\"\u003enon-momentary style of this lock\u003c\/a\u003e where the key is removable.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePlease note: This is not for use in a nuclear warhead situation - each key lock order comes with the same keys. And it isn't hard to pick this lock, either. Think of this as a fun interface or minimal security setup where you aren't concerned with a skilled adversary.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"\/\/www.youtube.com\/embed\/sHUD_KeoNhM?si=7aBJQp8420bWY39k\u0026amp;start=97\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003ch2\u003eResources\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn-shop.adafruit.com\/product-files\/5929\/C20303-001_datasheet.pdf\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":50847327453457,"sku":"ADA5929","price":2.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/momentary-on-off-round-key-lock-switch-12mm-diameter-adafruit-ada5929-42389651325123.jpg?v=1735211043","url":"https:\/\/abcd3032.myshopify.com\/zh\/products\/momentary-on-off-round-key-lock-switch-12mm-diameter","provider":"Tayyab Zak","version":"1.0","type":"link"}