Annual report pursuant to Section 13 and 15(d)

Product warranty - Schedule of Product Warranty Reserve (Details)

v3.24.1
Product warranty - Schedule of Product Warranty Reserve (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Guarantees [Abstract]    
Product warranty period 1 year  
Schedule of Product Warranty Reserve [Roll Forward]    
Warranty reserve, beginning balance $ 137,800 $ 164,800
Warranty provision for units sold 286,391 208,730
Costs of warranty incurred (282,191) (235,730)
Warranty reserve, ending balance $ 142,000 $ 137,800