Features: 1. Multi oil type detection: DOT3/DOT4/DOT5.1 2. High sensitivity probe: High sensitivity probe, plug and play detection 3. High precision detection: upgrading chips, high-precision algorithms 4. Stainless steel conduit: convenient operation with multi-directional curved extension Dual mode detection: suitable for both bright and dark environments Probe fill light: One click on for easier detection Intelligent shutdown: automatic shutdown after 3 minutes of standby Specification: Product name: Brake oil detector Color: Black Product model: V066 Power supply: 2 PCS No. 7 battery(NOT INCLUDED) Working voltage: 3V Working current: 20-25mA Product size: 156 x 65 x 22.3mm Product weight: 121g Usage : 1. Press the menu key to set the brake oil type beforemeasuring 2. Put the device probe rod into the brake oil pot (the probelight can be turned on in dark environment) 3. The device screen displays the measurement results (turnon the screen backlight in a dark environment) 4. Wipe the probe rod clean after useBrake oil replacement recommendations:In order to good brake performance, it is recommended that if the measured oil index reaches more than 3% of therange, please replace the brake oil in time to their owndriving material: plastic Package Contents: 1 x Brake Oil Detection Instrument Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.