Climate Class Kit, This Includes 2 Wireless Pressure Probes, 2 Wireless Psychrometers, 2 Wireless Temperature Clamps and a Protective Zippered Bag, Features: Overmolded Parts, IP54 Rated (for Dust Particles and Rain), For Use with JB GO V2 or Measure Quick Apps, Operates with 2 AA-batteries, Supported with Bright OLED Display, Dimensions: 11-5/8"H x 12-7/10"W x 7-2/5"D, Weight: 5.3 lbs.