HM-13 Dual Mode Bluetooth 4.0 BLE SPP LE Serial Port Module
compatible w/ Bluetooth 3.0/2.1
$6.72 FREE
BTC-T37 Mining Machine Motherboard CPU Group
8 video card slots / DDR3 memory integrated / VGA interface
$101.95
HM-11 Bluetooth V4.0 Transceiver BLE Module
TI CC2540 / CC2541 chip
$3.75 FREE
JY-MCU HC-06 Bluetooth Wireless Serial Port Module
V1.06 / slave module / 3.3V level / Arduino compatible core module
$5.49 FREE
RD DPS5020 Digital Power Supply Buck Voltage Converter LCD Voltmeter
authentic / 1.44" LCD / constant voltage current / communication version
$52.00 FREE
Juwei 180W Constant Current Electronic Load Discharge Battery Capacity Tester
200V 20A / random color of the board
$41.03 FREE
XH-M400 DC-DC DC 4-40V Adjustable High Power Step Down Module (5-Pack)
5-PACK 200W max. power / 8A max. output / XL4016E1 step-down chip / w/ regulator
$15.66 FREE
LILYGO LILY Pi ESP32 Wifi Bluetooth 3.5'' Capacitive Touch Screen
w/ 5V 2A relay & USB expansion port
$28.45 FREE
Keyes ESP32 Core Board for Arduino
$10.38 FREE
ZK-502T 50W*2 Bluetooth V5.0 Subwoofer Audio Amplifier Board Module w/ Tone
treble/bass adjustable / dual channel stereo output
$16.54 FREE
XH-W1621 AC 110-220V Digital Thermostat PID Constant Temperature Controller
for incubation heating plate / LCD display
$10.37 FREE
XH-W1621 DC 12-24V Digital Thermostat PID Constant Temperature Controller
for incubation heating plate / LCD display
$10.33 FREE
XH-W1501 24V Adjustable Digital Temperature Controller Board
-40'C~100'C control range / 2CH relay / w/ waterproof probe
$7.34 FREE