3.5mm pitch screw terminal connector 3 pin
4 Channel Infrared Detection Tracing Photoelectric Sensor
MAX30100 Pulse Oximeter Heart Rate Sensor
5V 4 Channel SSR Solid-State Relay - low Level Trigger 2A 240V
SMUN D-50B 110VAC/220VAC to 5V 6A / 24 1A Dual Output 50W Power Supply