The Rapid RH product line is the fastest, most cost effective and simplest way to meet ASTM F2170, the standard for in situ relative humidity (RH) testing of concrete floor slabs. Your smart device will detect any Wagner Meters wireless device that features Bluetooth connectivity such as the Smart Logger or Orion 950 Smart Pinless Wood Moisture Meter, and perform the pairing procedure automatically. There is nothing you need to do, the devices do the work for you. Rapid RH L6 sensors feature a customized version of the SHT35 humidity sensor from Sensirion that has a +/-2% accuracy tolerance at 50% and 90% relative humidity (RH). This important aspect of the L6 concrete RH testing system puts it in direct compliance with ASTM F2170. Standard SHT35 humidity sensors, found in other concrete RH test systems, start to deviate from the +/-2% tolerance at RH levels as low as 50%. Each Rapid RH Starter Kit is carried within a water-tight and dust-proof hard case built to military specifications. ATA 300 rated and 2.8 times stronger than the competition, the iSeries hard cases from SKB are made in the USA and built to meet or exceed MIL-STD-810G, MIL-C-41503, DEF-STAN 81-41, and IP67 standards.