Di-Log-4mm-Test-Lead-Set-MC4-&-Type-4-Connectors-SLLSC4-Di-Log-SLLSC4-P-The-Di-Log-SLLSC4-4mm-Test-Lead-Set-MC4-&-Type-4-Connectors-are-necessary-for-a-safe-connection-of-a-multimeter-or-voltage-detector-to-a-PV-module-so-that-voltage-&-current-measurements-can-be-made-when-assessing-the-performance-of-the-array-P-P-Supplied-in-both-positive-&-negative-colours-red-&-black-the-solar-testing-leads-are-essential-for-live-dead-testing-on-a-solar-installation-&-si