--- 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: "₩45917" currency: KRW in_stock: true reviews_count: 5 url: https://www.desertcart.kr/products/166897121-samfox-4-20ma-signal-generator-3-21ma-adjustable-high-precision store_origin: KR region: South Korea --- # Ultra-precise 0.01 accuracy Clear LCD display 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:** ₩45917 **Availability:** ✅ In Stock ## Summary > ⚙️ Master your signal game with precision and ease! ## 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?** ₩45917 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/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 - • **Flexible Output Range:** Switch smoothly between 4-20mA device control and -21mA signal debugging to cover all your testing needs. - • **Intuitive LCD Interface:** Stay effortlessly informed with a crisp liquid crystal display showing actual current, percentage, or Hz modes. - • **Pinpoint Precision Control:** Achieve ultra-accurate current simulation with 0.01 accuracy—never second guess your readings again. - • **Compact & Polarity-Free Design:** Lightweight 44g kit with non-polarity terminals means quick setup and zero hassle in any workspace. - • **Effortless Calibration & Storage:** Calibrate linear output to perfectly match your device and save up to 9 programmable outputs for instant recall. ## Overview The Samfox JS-420ISG-V2 is a compact, high-precision 4-20mA signal generator designed for professional testing and calibration. Featuring a sharp LCD, rotary encoder adjustments, and programmable outputs, it delivers up to 0.01 accuracy with flexible output ranges and polarity-free terminals, making it an essential tool for engineers and technicians seeking reliable analog simulation. ## 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 value Linear 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-V2 Supply Voltage: 15 - 30V Output Range: 4 - 20mA / 3 - 21mA Display: Actual Current / Percentage / Hz Sampling Resistance: ＜500 Ω Output Accuracy: 0.5% Display Accuracy: 0.01 Color: Shown As Pictures Size: Approx. 8 * 4.2 * 4.5cm / 3.14 * 1.65 * 1.77inch Weight: 44g Type: Signal Generator Package List: 1 * Signal Generator 1 * Manual ## 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 | |---------------|-------| | Asin | B07TGJPPJL | | Best Sellers Rank | #359,129 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #166 in Function Generators | | Date First Available | June 25, 2019 | | Item Weight | 2.08 ounces | | Manufacturer | samfox | | Package Dimensions | 3.43 x 2.48 x 2.28 inches | ## 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 on Reviewed in the United States May 17, 2026* This works perfectly. No manual provided though. Very accurate 4-20mA output. ### ⭐⭐⭐⭐⭐ Great piece *by on Reviewed in the United States March 27, 2026* This is panel mounted perfection! ### ⭐⭐⭐⭐⭐ Panel-mount for 1mm plate *by on Reviewed in the United States 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.kr/products/166897121-samfox-4-20ma-signal-generator-3-21ma-adjustable-high-precision](https://www.desertcart.kr/products/166897121-samfox-4-20ma-signal-generator-3-21ma-adjustable-high-precision) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-09-13*