New from Wagner Electronics, the Rapid RH 4.0 combines the company’s patented Smart Sensor and a redesigned Easy Reader with patent-pending Touch-n-Sense technology for easy-to-use, fast and accurate RH testing, the company says. With Touch-n-Sense technology, the Easy Reader activates on contact with the Smart Sensor, turning on, taking a reading, and holding the data for five minutes, then powering off.For details, circle 140 on the Reader Inquiry Card.