Lascar-EL-USB (Universal Serial Bus)-CASE-Protective-Metal-Case-for-EL-USB (Universal Serial Bus)-1-Lascar-EL-USB (Universal Serial Bus)-CASE-P-The-Lascar-EL-USB (Universal Serial Bus)-CASE-is-a-Rugged-Metal-Case-that-provides-additional-waterproof-protection-for-the-EL-USB (Universal Serial Bus)-1-data-logger-order-code-85-3529-&-85-3419-This-will-allow-the-data-logger-to-record-temperatures-in-particularly-harsh-environments-P-P-N-B-The-EL-USB (Universal Serial Bus)-2-can-also-benefit-from-the-additional-waterproof-protection-of-the-EL-USB (Universal Serial Bus)-CASE-however-it-would-be-limited-to-measuring-temperature-only-P-Lascar-E