Features: Accurately measure moisture content in wood, Dry Wall, and paper materials with ±0.5% accuracy to prevent structural damage caused by humidity issue, essential for material integrity verification. Features practical design with auto shutdown (5min idle), 3 color backlits LCD (green≤12%, yellow≤17%, red≥18%), 6mm probes depth limiters, and 3A (1.5V ) battery operation with low voltages alerts system. Ideal for construction groups, furniture maker, DIY enthusiasts, and renovations professional requiring material quality control across multiple worksites. Perfect for monitoring wall humidity during home renovations, verifying wood dryness in furniture production, and checking paperboards storage conditions in warehouse. Engineered for extreme environment ( 10°C~60°C operation/ 20°C~80°C storage) with IP54 rate housing, this professional grades wood moisture detectors ensures reliable readings even in challenging job site conditions. Specifications: Component:Plastic, Metal Altitudes: ＜2000M Pollution level: Level 2 Working temperature:-10℃ ~ 60℃ Working humidity: ≤75%RH Storage temperature:-20℃ ~ 80℃ Storage humidity: ≤75%RH Alarm mode: sound and indicator light Battery: 2×1.5V 3A(not included) Battery undervoltage prompt: about 2.4V, LCD prompts undervoltage symbol. Overall size: Approx.136×54×28MM/5.35x2.12x1.10inches Package Includes: 1Set Humidity Tester note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color. Thanks!