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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2004 USD ($)
Functional currency |  |  |  |
Official exchange rate of NIS 1 to US dollar | 0.288 | 0.260 | 0.256 |
Increase (decrease) of the Official exchange rate of NIS 1 to US dollar | 10.90% | 1.48% | (33.00%) |
Liability for employee rights upon retirement |  |  |  |
Severance expenses | $ 145,979 | $ 147,754 | $ 111,030 |
Royalty-bearing grants |  |  |  |
Research and development grants |  |  |  | $ 93,300
Warranty expenses | 8,540 | 8,605 | $ 1,157 |
Inventories |  |  |  |
Inventory valuation reserves amount | $ 756,134 |  |  |

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