MD-2G/4G digital wood moisture tester is a precision instrument, suitable for determining the moisture content of wood, bamboo, paper, Chinese herbal medicine and other wood fiber articles in various occasions. Good reliability and durability, compact structure, easy to carry, simple to use, is your ideal moisture measurement tool. I. Features: * Large-screen digital LCD display * Measuring range: 5%-40% * Resolution: 1% * High accuracy and fast response * Reading value lock function, can lock the measured value * Symbol and unit display, easy to read * Low voltage automatic prompt symbol " " (ultra low voltage automatic shutdown) * Power: Single 9V alkaline or carbon-zinc battery * Meter size: 126×70×29mm * Weight: Approx. 150g (including battery) * Operating temperature and humidity: 0°C~40°C (32°F~104°F) 0~70%Rh * The detector will automatically turn off when not used within 3 minutes to save power * Long press for 2 seconds when starting up to avoid misoperation at startup II.