Review on Classroom Learning Resources: LED Light Buzzers by David Boulanger

I love how loud the buzzers are and that they light up. Pretty good plastic parts. It's a bit expensive but works very well and is a lot of fun. I would give this one 5 stars but I gave it 4 because the buzzers don't have an on/off switch. The cover that holds the battery needs to be opened with a small screwdriver. Therefore, it would not be easy to just pull out the batteries to avoid the buzzer sounding during transportation. So do not throw away the original packaging to take the buzzers with you without turning them off. :) I still recommend the product. You will not be dissatisfied with his appointment. It's just that the transport is embarrassing when it runs out. :)