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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of total accounts receivable) (Details) - Accounts Receivable [Member] - Customer Concentration Risk [Member] | 3 Months Ended
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Jan. 02, 2021 | Dec. 28, 2019
Xinye(HK) Electronics.Co [Member] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Customer concentrations risk percentage | [1] |  |  | 14.10%
Super Power International [Member] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Customer concentrations risk percentage | [1] |  |  | 10.40%
Forehope Electronic (Ningbo) Co Ltd [Member] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Customer concentrations risk percentage |  | 17.50% | [1] | 14.00%
Haoseng Industrial Company Limited [Member] |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Customer concentrations risk percentage | [1] | 14.40% |  |
[1] | Distributor of the Company's products.

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