Smartwares RM149 ‘teardown’ (smoke detector)

Here is a photo for those who want to see what a Smartwares RM149 smoke detector looks like on the inside.

I opened one after it produced a false alarm in the middle of the night (apparently you need to vacuum them regularly to prevent bugs or dust from blocking the sensor) to see if I could see the blockage.

As you can see though, the sensor is in its own housing (the round black thing with the pencil marks) and I did not feel confident I could open it without breaking things, so I did not.

The metal plate in the right element lines up with the three springs in the top right of the left element.

The two elements are attached with four plastic clips (seen on the left element) and a small phillips screw (seen peeking through the battery compartment in the bottom right of the left element).

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