--- product_id: 438445956 title: "JL3RH Job Link Flex Psychrometer Probe w/Remote Data Logging for BLE 4.0 Devices, 2.4 GHz Radio Frequency, 0% RH to 100% RH Measurement Range" brand: "fieldpiece" price: "€ 501.12" currency: EUR in_stock: true reviews_count: 5 category: "Fieldpiece" url: https://www.desertcart.pt/products/438445956-jl3rh-job-link-flex-psychrometer-probe-w-remote-data-logging store_origin: PT region: Portugal --- # BLE 4.0 compatible with Job Link App 350' wireless range, no transmitter needed 0-100% RH measurement range JL3RH Job Link Flex Psychrometer Probe w/Remote Data Logging for BLE 4.0 Devices, 2.4 GHz Radio Frequency, 0% RH to 100% RH Measurement Range **Brand:** fieldpiece **Price:** € 501.12 **Availability:** ✅ In Stock ## Summary > 🌬️ Stay ahead with precision humidity insights—no wires, no limits! ## Quick Answers - **What is this?** JL3RH Job Link Flex Psychrometer Probe w/Remote Data Logging for BLE 4.0 Devices, 2.4 GHz Radio Frequency, 0% RH to 100% RH Measurement Range by fieldpiece - **How much does it cost?** € 501.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/438445956-jl3rh-job-link-flex-psychrometer-probe-w-remote-data-logging) ## Best For - fieldpiece enthusiasts ## Why This Product - Trusted fieldpiece brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Data Logging:** Syncs and logs data remotely for streamlined reporting and job site efficiency - • **Seamless Connectivity:** Direct BLE 4.0 link to Job Link App and SM380V/SM480V manifolds for live data - • **Effortless Flexibility:** Long flexible wand with sliding magnet for precise, anywhere measurements - • **Extended Wireless Reach:** 350-foot wireless range penetrates walk-in coolers and freezers without extra gear - • **Comprehensive Diagnostics:** Measures dry bulb, wet bulb, %RH, dew point, and enthalpy for full system insight ## Overview The Fieldpiece JL3RH Job Link Flex Psychrometer Probe offers professional HVAC technicians a flexible, wireless solution for accurate humidity and temperature measurements. Compatible with BLE 4.0 devices and Fieldpiece’s Job Link system, it delivers real-time data up to 350 feet away without a transmitter. Its versatile design and comprehensive metrics empower precise diagnostics and efficient data logging, making it an essential tool for modern HVAC pros. ## Description 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. Review: Pricey but worth it - I’ve been using the Fieldpiece psychrometer for a while now, and it’s become one of my go-to tools for HVAC work. It’s quick, reliable, and gives consistent readings for relative humidity, wet bulb, and dry bulb temperatures, which makes my job a lot easier when diagnosing system performance. The interface is straightforward and easy to navigate, even if you’re in a hurry on a job site. I especially like how fast it responds compared to some older models I’ve used. The build quality feels solid, and it holds up well to everyday use in the field. Another big plus is how well it pairs with other Fieldpiece tools and apps, making it easy to log and track data when needed. That said, battery life could be a bit better if you’re using it heavily throughout the day, but it’s not a dealbreaker. Overall, it’s a dependable, professional-grade psychrometer that delivers accurate results and saves time. Definitely worth the investment if you work in HVAC or need precise humidity measurements regularly. Review: Útil Herramienta para HVAC - Es una excelente herramienta para profesionalizar y entender mejor el comportamiento de los equipos en tiempo real. Lo mejor es comprar 2 para poder obtener la Delta T fácilmente con la misma app con la que trabajan. ## Features - Flex Psychrometer Probe - Psychrometer probe for Job Link systems - Compatible with SM380V and SM480V - Powerful 350' wireless range w/no transmitter required - Communicates with Job Link App ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DNJ1YFJ | | Brand | Fieldpiece | | Customer Reviews | 4.8 out of 5 stars 766 Reviews | | Included Components | Meter | | Item Dimensions | 46 x 122 x 229 millimetres | | Item Weight | 0.5 Pounds | | Item dimensions L x W x H | 46 x 122 x 229 millimetres | | Item weight | 0.5 Pounds | | Manufacturer | Fieldpiece | | Manufacturer Part Number | JL3RH | | Model Number | JL3RH | | Number of Items | 1 | | Number of items | 1 | | UPC | 872641003364 | ## Product Details - **Brand:** Fieldpiece - **Item Weight:** 8 ounces - **Item dimensions L x W x H:** 1.8 x 4.8 x 9 inches - **Measuring Range:** -40°F to 250°F - **Sensing Distance:** 1000 feet ## Images ![JL3RH Job Link Flex Psychrometer Probe w/Remote Data Logging for BLE 4.0 Devices, 2.4 GHz Radio Frequency, 0% RH to 100% RH Measurement Range - Image 1](https://m.media-amazon.com/images/I/61rplBrClKL.jpg) ## Questions & Answers **Q: Do these probes clog up easily when inserting into and/or thru duct-board for temps (TD)?** A: Yes they can, the best thing to do is use a screwdriver or awl to make the hole before inserting the probe. You don’t want to use the probe to make the hole. Once the hole has been made I haven’t had any issues with the probe clogging up when inserting. **Q: Does this come with 2 probes?** A: No **Q: Doest this connect to the sm460?** A: No **Q: Does jl3rh work with current version of apple job link app on my phone? requires any other devices to connect to the app?** A: Measurequick app or fieldpiece joblink app ## Customer Reviews ### ⭐⭐⭐⭐⭐ Pricey but worth it *by C***D on 25 March 2026* I’ve been using the Fieldpiece psychrometer for a while now, and it’s become one of my go-to tools for HVAC work. It’s quick, reliable, and gives consistent readings for relative humidity, wet bulb, and dry bulb temperatures, which makes my job a lot easier when diagnosing system performance. The interface is straightforward and easy to navigate, even if you’re in a hurry on a job site. I especially like how fast it responds compared to some older models I’ve used. The build quality feels solid, and it holds up well to everyday use in the field. Another big plus is how well it pairs with other Fieldpiece tools and apps, making it easy to log and track data when needed. That said, battery life could be a bit better if you’re using it heavily throughout the day, but it’s not a dealbreaker. Overall, it’s a dependable, professional-grade psychrometer that delivers accurate results and saves time. Definitely worth the investment if you work in HVAC or need precise humidity measurements regularly. ### ⭐⭐⭐⭐⭐ Útil Herramienta para HVAC *by D***S on 5 November 2021* Es una excelente herramienta para profesionalizar y entender mejor el comportamiento de los equipos en tiempo real. Lo mejor es comprar 2 para poder obtener la Delta T fácilmente con la misma app con la que trabajan. ### ⭐⭐⭐⭐⭐ Great for HVAC *by A***J on 8 November 2025* Got this for doing air conditioning. It’s incredibly convenient. Recommend it for anyone in hvac. ## Frequently Bought Together - Fieldpiece JL3RH Job Link Flex Psychrometer Probe w/Remote Data Logging for BLE 4.0 Devices, 2.4 GHz Radio Frequency, 0% RH to 100% RH Measurement Range - Fieldpiece - Job Link System Dual Port Manometer Probe Kit - JL3KM2 - Long Range Wireless All-in-One Static, Gas and Draft Pressure Gauge - HVAC Tools - Fieldpiece JL3PC Job Link Premium Pipe Clamp Probe for 1/4" to 1 3/8" Pipes --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/438445956-jl3rh-job-link-flex-psychrometer-probe-w-remote-data-logging](https://www.desertcart.pt/products/438445956-jl3rh-job-link-flex-psychrometer-probe-w-remote-data-logging) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-08-29*