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The VP-1 should be tested before and after use for proper operation. Powered by field replaceable 9V lithium or alkaline battery with the accessory PT-VP Voltage Probe Tester.
HD Electric PT-VP Proof Tester 电压探针测试仪
VP-1 应在使用前后进行测试，以确保其正常运行。 由可现场更换的 9V 锂电池或碱性电池和附件 PT-VP 电压探针测试仪供电。
