12V 12mm Buzzer or BeeperIt's a 12V 12mm Buzzer or Beeper. A buzzer, also known as a beeper, is a type of audio signal device that can be mechanical, electromechanical, or piezoelectric. Alarm devices, timers, and confirmation of user input, such as a mouse click or keystroke, are common Applications for buzzers and beepers. This Buzzer is a Good performance general purpose musical buzzer used commonly in alerting alarming circuits, horn, and kids toys. Features: It is used

6 mm Support remote control type  Fixed code

6mm Diameter 18

Lighting equipment

Type: Common Anode

MAX30102 is a sensor that combines a pulse oximeter and a heart rate monitor

The built-in oscillator needs only a 5% resistor

The 4 Channel wireless Digital Remote Control Light Switch 220V 4 ways 1000W High-security

of Contact Points 2 Connector Type XT90 Metal Connector Size 4

Indicator Lights: Ideal for power status or other visual signals in electronics

two pins for each colour LED

1x 8pin straight header pin

After the chip gets power-on reset