Disposable ECG EKG Electrodes Medical Electrode ( 3 PCS PER BAG )Diameter 50mm Electrode Pads 

22pf  Variable Capacitor

 223pf Duplex Radio Variable Capacitor

6x6x12mm Tactile Push Button Switch Black  

"Nextion NX8048T050 5 inch Resistive Touch Screen Man-machine interface HMI kernel

Nextion NX4024T032 3.2 Inch display Man-machine Interface HMI Touch Screen

MOD-TCA9548A CJMCU-9548 TCA9548A 1-to-8 I2C 8-Channel IIC Multiplexer

ProsKit 8S005 Soldering Paste Flux [50g]

proskit sd-9802 31 IN 1 Precision Electronic Screwdriver Set

31 in 1 screwdriver set multifunction hs-6036b screwdriver kit

tip41c NPN transistor

e10 bulb 2.5v 0.3a with bulb holder