Skip to the beginning of the images gallery

On/Off Round Key Lock - 12mm Diameter

SKU: ADA5927 Brand: Adafruit

These are mechanical switches that don't use a button or a lever or a magnet to open and close the contacts.

$6.40 AUD, inc GST

$5.82 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Fastest delivery: Tomorrow* Disclaimer:
For next-day delivery, the shipping address must be in the AusPost next-day network, eParcel Express must be selected, and the order must be placed before 2PM AEST Mon-Thurs excluding NSW Public Holidays. Orders may be delayed due to AusPost pickup timings and order verifications. eParcel Express is typically a 1-day service within the AusPost next-day network, though it is sometimes 2+ days.

Quantity Discounts:

10+ $5.58 (exc GST)
25+ $5.41 (exc GST)

These are mechanical switches that don't use a button or 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.

Insert the 'bike lock' style key and rotate it clockwise; now, the two contacts on the back are electrically connected. Rotate it back counterclockwise to disconnect the switches. You can remove the key in either position. It makes for an excellent 'On-Off' switch that requires the key to activate.

If you want a version of this lock where the key cannot be removed in the On position, check out the 'momentary' version of this switch

Please note: 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.

Technical Details

Datasheet

This product is listed in:

Components & Parts>Switches>Key Switches

Product Comments

Start the conversation

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!