This portable device can measure moisture with reliable results. 4 modes to switch accroding to wood. Pocket design allows you to do the measurement at ease. Features: 4 modes to switch accroding to wood, making the measurement more accurate. Large LCD display and lock button easy to get the results. Energy saving, automatic shutdown in 15 minutes without any operation, low battery indication. Simple operation with just one key. Lightweight and compact meter allows you to do the measurement at ease. Note: 1. Cover the pins with protective cap when not in use, keep away from children and be careful when measuring. 2. Keep the instrument in a stable environment, free from dust and sunlight when not in use. Specifications: Material: ABS Color: Gray Measuring principle: electrical resistance Range: 0%~99.9%RH Accuracy: 0.5%RH Resolution: 0.1% Pin length: 10mm Power supply: 1 * 9V battery (not included) Auto power off: 15 minutes Item size: 6.5 * 3.1 * 14.5cm / 2.56 * 1.22 * 5.71in Item weight: 96.7g / 3.4oz Package size: 15.0 * 8.0 * 3.8cm / 5.91 * 3.15 * 1.50in Package weight: 122g / 4.3oz Package list: 1 * Hygrometer 1 * User Manual (English)