--- product_id: 166897121 title: "Samfox 4-20mA Signal Generator, 3-21mA Adjustable High Precision DC Current Analog Simulator Two-Wire Transducer Test Signal Generator DIY Kit JS-420ISG-V2" brand: "samfox" price: "131.42 DT" currency: TND in_stock: true reviews_count: 5 category: "Samfox" url: https://www.desertcart.tn/products/166897121-samfox-4-20ma-signal-generator-3-21ma-adjustable-high-precision store_origin: TN region: Tunisia --- # 0.01% ultra-precise accuracy Clear LCD with customizable display modes Rotary encoder for seamless adjustment Samfox 4-20mA Signal Generator, 3-21mA Adjustable High Precision DC Current Analog Simulator Two-Wire Transducer Test Signal Generator DIY Kit JS-420ISG-V2 **Brand:** samfox **Price:** 131.42 DT **Availability:** ✅ In Stock ## Summary > ⚡ Precision Current Control, Dialed to Perfection! ## Quick Answers - **What is this?** Samfox 4-20mA Signal Generator, 3-21mA Adjustable High Precision DC Current Analog Simulator Two-Wire Transducer Test Signal Generator DIY Kit JS-420ISG-V2 by samfox - **How much does it cost?** 131.42 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/166897121-samfox-4-20ma-signal-generator-3-21ma-adjustable-high-precision) ## Best For - samfox enthusiasts ## Why This Product - Trusted samfox brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Output Range:** Supports 3-21mA adjustable output and dual-mode display for both device control and signal debugging. - • **User-Friendly Interface:** Crystal-clear LCD shows actual current, percentage, or frequency—customize your view to match your workflow. - • **Pinpoint Precision Control:** Achieve flawless 4-20mA current simulation with 0.01% display accuracy for professional-grade testing. - • **Compact & Ready for Panel Mount:** Lightweight 44g design fits perfectly in control panels, making it the go-to tool for field engineers and DIY pros. - • **Effortless Calibration & Adjustment:** Rotary encoder lets you dial in exact output values quickly—no more guesswork or tedious setups. ## Overview The Samfox JS-420ISG-V2 is a compact, high-precision 4-20mA signal generator featuring 0.01% display accuracy, a user-friendly rotary encoder, and a customizable LCD display. Designed for seamless current simulation and signal debugging, it supports adjustable output ranges from 3 to 21mA and offers easy calibration to ensure your device readings match perfectly. Ideal for professionals seeking reliable, panel-mountable test equipment. ## Description Features: This signal generator can use 4-20mA to generate voltage and control the current in the circuit. Accuracy up to 0.01; Liquid crystal display; Rotary encoder adjustment ; Two connection terminals are non polarity.Output range can be set; 4-20mA (device control) / -21mA (signal debugging)Display mode can be set, it is convenient for you to see the valueLinear output can be calibrated; The actual output can be consistent with the display of customer device.Output storage: automatic storage & manual storage.2-9 programmable outputs: just rotate the encoder to set.Specification: Item Model: JS-420ISG-V2Supply Voltage: 15 - 30VOutput Range: 4 - 20mA / 3 - 21mADisplay: Actual Current / Percentage / HzSampling Resistance: ＜500 ΩOutput Accuracy: 0.5%Display Accuracy: 0.01Color: Shown As PicturesSize: Approx. 8 * 4.2 * 4.5cm / 3.14 * 1.65 * 1.77inchWeight: 44gType: Signal GeneratorPackage List:1 * Signal Generator1 * Manual Review: Excellent signal generator - This works perfectly. No manual provided though. Very accurate 4-20mA output. Review: Great piece - This is panel mounted perfection! ## Features - This signal generator can use 4-20mA to generate voltage and control the current in the circuit. - Accuracy up to 0.01; Liquid crystal display; Rotary encoder adjustment ; Two connection terminals are non polarity. - Output range can be set; 4-20mA (device control) / -21mA (signal debugging) - Display mode can be set, it is convenient for you to see the value - Linear output can be calibrated; The actual output can be consistent with the display of customer device. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.5 out of 5 stars 17 Reviews | ## Images ![Samfox 4-20mA Signal Generator, 3-21mA Adjustable High Precision DC Current Analog Simulator Two-Wire Transducer Test Signal Generator DIY Kit JS-420ISG-V2 - Image 1](https://m.media-amazon.com/images/I/519a5bvp6gL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent signal generator *by K***M on May 17, 2026* This works perfectly. No manual provided though. Very accurate 4-20mA output. ### ⭐⭐⭐⭐⭐ Great piece *by S***. on March 27, 2026* This is panel mounted perfection! ### ⭐⭐⭐⭐⭐ Panel-mount for 1mm plate *by R***F on February 6, 2025* Panel-mount for 1mm plate. Works perfect ## Frequently Bought Together - Samfox 4-20mA Signal Generator, 3-21mA Adjustable High Precision DC Current Analog Simulator Two-Wire Transducer Test Signal Generator DIY Kit JS-420ISG-V2 - Current Loop, Two-Wire High Accuracy 4-20mA Current Loop Signal Generator LCD Transducer Test Signal Current - DROK 4-20mA Generator, Adjustable Signal Generator, DC 0-10V 0 4-20mA Current Voltage Analog Simulator for Value Adjusting PLC Panel LED Testing --- ## 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.tn/products/166897121-samfox-4-20ma-signal-generator-3-21ma-adjustable-high-precision](https://www.desertcart.tn/products/166897121-samfox-4-20ma-signal-generator-3-21ma-adjustable-high-precision) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-04*