Pay in 4 interest-free payments of $2.50 Learn more
Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
5V to 28V (typically 5V)
two for power and ground) for hooking up external components
• 5 x Cross Screwdrivers (1
The board supports Bluetooth 5
Both the red light and infrared light is used to measure oxygen levels in the blood
Buzzer 12V 3S 20A 18650 Lithium Battery Protection Board (BMS) 5V to 28V (typically 5V)Introduction : This buzzer is an active buzzer, which means that it will buzz at a predefined frequency (2300 300 Hz) on its own even when you just apply steady DC power. Features : Rated Voltage : 12V. Operating Voltage : 4 12V. Resonant Frequency : 2300 300 Hz . Operating Temperature : 20C to 45C.
US$ 329.50
US$ 199.00
US$ 134.50
US$ 329.50
US$ 109.50
US$ 134.50
US$ 109.50
US$ 134.50
US$ 109.50
US$ 134.50
US$ 199.00
US$ 219.50