Please Note: All the Parts (links) marked with "*" will be installed on the PCB https://digikey.com Parts List * 1. Relay https://www.digikey.com/short/r54p5m38 * 2. Toggle switch https://www.digikey.com/short/mj91t308 * 3. Zener Diode https://www.digikey.com/short/hr75h1pm * 4. Light Incandescent https://www.digikey.com/short/24293qhc * 5. Power Connector https://www.digikey.com/short/b9qt8b23 * 6. 100k Potentiometer https://www.digikey.com/short/jhbpp3b2 * 7. 3.5mm Plug https://www.digikey.com/short/9p25qj75 * 8. 50V 1A Diode https://www.digikey.com/short/bfq4dt94 9. 30VDC 300mA Power supply https://www.digikey.com/short/jzpd7tn9 10. Potentiometer Control Rotary Knob https://www.digikey.com/short/4r27dpn4 https://ebay.com Parts list * 11. NE555 Adjustable Signal Generator Board Module (PWM) https://www.ebay.com/itm/224775045296 12. 3.5mm TENS Lead Wires - Two 2mm Pin Connectors https://www.ebay.com/itm/195987988137 13. 99.99% Pure Silver Wire 14 Gauge - Two 6 inch rods https://www.ebay.com/itm/322147273809 14. BBSA 1.0 PCB (Printed Circuit Board) https://www.ebay.com/itm/146012040401 15. 3D Printed Plastic Case https://www.ebay.com/itm/146579103482 https://www.aliexpress.us Parts List 16. TENS Electrode Pads 7x1.5cm https://www.aliexpress.us/item/3256807093685651.html Please Let me know if any of the links do not work or any of the parts are not available email me support@bbmpulser.org Andrey D