CentIoT - 4010 5V DC Brushless Cooling Fan XH2.54 2Pin Sleeve bearing 5500rpm - 40mm x 40mm x 10mm Ventilation Cooling Fan (suitable for VGA, CPU) BC170-6S-2A-NMC ProtoShield prototype expansion board with

ProtoShield prototype expansion board with two buttons and two LED circuits can be directly used

520 KB SRAM

only need one battery

to the microcontroller and 3

Uses The Quality Relay

CentIoT - 4010 5V DC Brushless Cooling Fan XH2.54 2Pin Sleeve bearing 5500rpm - 40mm x 40mm x 10mm Ventilation Cooling Fan (suitable for VGA, CPU) BC170-6S-2A-NMC ProtoShield prototype expansion board withBrand: CentIoT Color: Black Features: DC 5V 40mm computer case cpu cooling fan Improve air flow. Cool your CPU when they are used, make your PC more durable Unique fan design for easy thermal heat dissipation, low noise Power saving design, low power consumption, easy to use Dimension: 40x40x10mm Bearing type: Sleeve Rated Voltage: DC 5V Power Connector: XH2. 54 2Pin Rated Current: 0. 110% Amp Rated Speed: 550010%rpm Air flow: 7. 4CFM Noise: 2310%dBA