The tester can be as a digital brake fluid tester suitable for determining brake fluid quality.
Quality is tested and indicated on five LEDs in terms of “per cent of water in the brake fluid”.
LED display: Green: no water – OK.
Yellow: less than 1% of water. – Warming.
Yellow/yellow: approx. 2% of water. – Warming.
Yellow/yellow/red: approx. 3% of water. The oil should be changed.
Yellow/yellow/red/red: At least 4% of water. Change the oil urgently.
WARNING: California prop 65 - This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/