General Tools MM70D-7022KIT Moisture Meter Kit, Pin Type or Pinless, With Two Probes and Case Interchangeable extension probes, a 39-Inch (1 meter) long external probe and a non-invasive measuring external roller probe . Stores up to 99 readings, Max/Min average values recalled Auto temperature compensation and internal calibration. Built-in calibration adjustment Audible and visual low battery warning and audible alarm when exceeding pre-set levels Features & Benefits : 	1 percent Accuracy 	Digital LCD display with luminescent back-light 	Protective cap for safe carrying and operation 	Hardened gloss treatment on display-window for an abrasion-proof long term clean lens 	5.5percent to 99.9percent measurement range with 0 to 1 VDC output 	Stores/recalls up to 99 readings + Min/Max 	Auto temperature compensation and internal calibration 	Auto power off 	Ergonomic design, comfortable and durable 	Audible and visual low battery warning 	Interchangeable extension probe 	Additional set of long pins 0.9 inch (23mm) included 	CE and RoHS approved Specifications : 	Measuring Range: 5.5 ~ 99.9percent H2O percent WME 	Resolution: 0.1percent 	Accuracy (at 25C): 1percent 	Wood scale Display: Digital dual LCD display, with multi-function indicator Sampling Rate: 0.3 seconds 	Wood Group Scales: Select from 8 wood species groups Data Memory: 99 readings Signal Output: 0 to 1 VDC (10mV/percent WME) 	Calibration: Built-in calibration adjustment Battery Life: About 250 hours of continued use with backlight off 	Operating Temperature: -4 to 131F(-20 to 55C) @&lt;80percent RH 	Dimensions:6.0 x 2.2 x 1.26 inch (153 x 56 x 32mm) 	Weight: 5.5 oz. (155g) including battery 	Power Source: 1 9V battery (included) Includes : 	MM70D Meter with two 0.5 inch (12.7mm) pins 	MP7021 External Pin-Type Probe 39 inch(1m) long with 0.5 inch (12.7mm) pins 	Additional Set of Interchangeable Long Pins 0.9 inch (23mm) 	Protective Fabric Carrying Case 	Battery 	User's manual