KEYES 8-CH 5V Relay Module for Arduino
authentic / w/ optocoupler isolation
$6.80 FREE
XH-M562 Dual Channel Mini Digital Power Amplifier Board
built-in TPA3116D2 chip / DC 12-24V input voltage / D class 2*50W
$3.40 FREE
Keyes AD8232 Heart Rate Monitor Module
authentic
$6.22 FREE
9V 1A Power Adapter
US plug / AC 100~240V
$2.65 FREE
DC-DC Power Supply Step-up Boost Module w/ Voltmeter
DC 3-35V to DC 3.5-35V / 4-40V measuring range
 
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$4.91 FREE
WS2812 64-bit 5050 RGB LED Development Board
w/ built-in full color drive
$4.00 FREE
VHM-314 V3.0 Bluetooth V5.0 Audio Receiver MP3 Lossless Decoder Board
w/ EQ mode & IR control
$3.99 FREE
5V 1-Channel SSR Solid State Relay
low level trigger / w/ fuse / 250V/2A max. load
$1.90 FREE
0.36" 3-Digit LED Voltmeter Module (3-Pack)
3-PACK DC 0-100V measuring range / red LED light
$3.71 FREE
KEYES RGB LED Module for Arduino
74HC595 chip / for 4 RGB LED Lights
$1.75 FREE