[Protect Work Surfaces]: The pinless moisture meter ensures your walls and projects remain unscathed by pinholes, scuffing, and scratching while accurately measuring moisture levels. [Care and Maintenance]: Store the instrument in a stable, dust-free environment away from direct sunlight when not in use. Remove the battery if the device be stored for over a month or when the low battery power symbol appears on the display. [Accurate Measurement]: precise readings by keeping fingers on the green rubber grips and away from the pad scanning area, as nearby metal or fingers can influence the pinless moisture meter readings. [WARM TIPS]: This pinless moisture meter readings can be influenced by nearby metal, or your own fingers. Keep fingers on the green-rubber grips, well clear of pad scanning(sensor pad) area. The device automatically powers off after 5 minutes of inactivity to conserve battery life. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! 2 AAA batteries not included Colour:Photo Color Material:ABS Package Contents: 1 x pinless moisture meter 1 x English instruction manual 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.