Fieldpiece JL3RH - Job Link System Flex Psychrometer ProbeThe JL3RH Job Link System Psychrometer Probe has a long flexible wand and strong sliding magnet for easy measurements anywhere on the system. Get instant live readings from ducts, plenums, registers, or grilles for accurate diagnostics. A flexible wand with a powerful sliding magnet provides quick and easy measurements anywhere on the system. Place in critical locations based on system needs Requires only 3/8 hole for duct testingConnect to Job Link App or Wireless SM380V and SM480V Digital ManifoldsYou can connect your psychrometers directly to both the Job Link app and the wireless SMAN Refrigerant Manifolds (3-port SM380V or 4-port SM480V) to see live air temperatures readings while you're making adjustments to the system. Data log results in the manifolds, or include in Job Link System reports. 350' wireless signal with no transmitter required Powerful enough to go through most walk-in coolers and freezersReturn and supply indicator switch ensures you're recording the right measurements in the correct place. Dry bulb Wet bulb %RH Dew point EnthalpyThe JL3RH psychrometer probes are sold individually so you can use one or more at a time, or they can be purchased as part of the JL3KH6 Job Link Charge and Air Test Kit. Please note, the JL3RH is one probe.