Delmhorst BD-2100 Digital Moisture Meter with Nist Certification is also Available:
M655N - Delmhorst BD-2100 Digital Moisture Meter with NIST Certification

Features & Applications:

Digital display with separate scales for wood, plaster/concrete, and gypsum. Measures wood moisture content over the range of 6-40%. Reference scale provides relative moisture readings in non-wood materials. This meter also features an industry exclusive sheetrock scale to measure % moisture content in sheetrock over the range of .2% to 50%. Averages up to 50 accumulated readings. Adjustable, audible set point alerts you when a pre-selected % moisture content has been reached. Green, yellow and red LEDs provide at a glance indication of moisture conditions. One of the industry favorites for testing EIFS (Exterior Insulated Finish System).

Features:

• Resistance technology recognized as the most accurate method for measuring moisture
• Easy one-hand operation
• Proven microcontroller circuit
• One-year warranty
• Can be used with Standard, Tapped or Deep Wall Probe
• 9V battery and Carrying Case included
• Three scales:
  
  Wood Scale -6% to 40% moisture range. Use for flooring and building material such as wood studs, floor joists, subfloors
  
  Reference Scale - reads from 0 to 100 on a relative basis. Use on non-wood materials such as concrete, plaster, and insulation
  
  Gypsum Scale - 0.2% to 50% moisture range. Use on sheetrock
• Averages up to 50 accumulated readings
• Set-point alerts when pre-selected moisture content is reached
• Connector to attach any available electrode for deep penetration

Applications:

• Wood
• Plaster
• Concrete
• Gypsum
• Paint
• EIFS

Spec Summary:

• 6%-40% moisture range on wood
• 0.2%-6% moisture range on gypsum
• 0 to 100 relative scale for all other non-wood materials
• Size: 7.5"x3"x1.75"
• Weight: 1 lb. 3 oz.
• Battery: 9V alkaline