uxcell 10Pcs 12x7.5mm DC5V 87dB 2Poles Active Magnetic Buzzer Integrated

hello everyone today we're going to be testing out some of the buzzers that we have at Science Kid store calm using a 2 AAA battery holder and 2 AAA batteries so we have 3 volts here this one is the buzzer piezo ceramic one and a half bowl to about 20 volts and this has a positive and negative side so it's important which the wire is connected to so let's see how this one sounds all right the next one we have is the buzz around to 2 volts up to 6 volts let's see how this one here sounds and finally we have the rectangular buzzer here one and a half volt to three volts and this is also available in black there we have both white and black let's see how this one sounds from the table so a quick recap and these buzzers can be found that Science Kid store calm and just type in buzzer in the search field and you'll find all three of them and this one also comes in black again