Comparative electrolytic type tester. Checks moisture content of fluid by resistance to electric current. Easily calibrated using new brake fluid. Audible test cycle with three LED read-out. Just insert probe and press button for immediate result. Works on DOT 3, 4 and 5.1 specification fluids. Powered by a 9V battery (not included). * Comparative electrolytic type tester. * Checks moisture content of fluid by resistance to electric current. * Easily calibrated using new brake fluid. * Audible test cycle with three LED read-out. * Just insert probe and press-button for immediate result. * Works on DOT 3, 4 and 5.1 specification fluids. * Powered by a 9V battery (not included). * Model No. VS027 https://elecena.pl/product/27186865/sealey-vs027-brake-fluid-tester 2024-11-08 https://elecena.pl/product/27186865/sealey-vs027-brake-fluid-tester 2025-02-17 https://elecena.pl/product/27186865/sealey-vs027-brake-fluid-tester 2025-07-13 https://elecena.pl/product/27186865/sealey-vs027-brake-fluid-tester 2025-08-02 https://elecena.pl/product/27186865/sealey-vs027-brake-fluid-tester 2025-11-14 https://elecena.pl/product/27186865/sealey-vs027-brake-fluid-tester 2026-03-10