--- product_id: 61317228 title: "SMARTGEN HGM420N Automatic Start Generator Controller (AMF)" brand: "smartgen" price: "FREE" currency: GBP in_stock: true url: https://www.desertcart.co.uk/products/61317228-smartgen-hgm420n-automatic-start-generator-controller-amf store_origin: GB region: Great Britain --- # Automatic Start Corded Electric 1-3 Phase Support SMARTGEN HGM420N Automatic Start Generator Controller (AMF) **Brand:** smartgen **Price:** FREE **Availability:** ✅ In Stock ## Summary > 🔋 Power Up Your Peace of Mind! ## Quick Answers - **What is this?** SMARTGEN HGM420N Automatic Start Generator Controller (AMF) by smartgen - **How much does it cost?** FREE with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/61317228-smartgen-hgm420n-automatic-start-generator-controller-amf) ## Best For - smartgen enthusiasts ## Why This Product - Trusted smartgen brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Operation:** Experience effortless generator management with automatic start capabilities. - • **Reliable Protection:** Built-in alarms and warnings safeguard your generator, giving you peace of mind. - • **User-Friendly Design:** Front panel mounting makes installation a breeze, perfect for any setup. - • **Compact & Lightweight:** At just 420g, this controller is easy to handle without compromising on performance. - • **Versatile Compatibility:** Designed for both gasoline and diesel gensets, ensuring flexibility for your power needs. ## Overview The SMARTGEN HGM420N Automatic Start Generator Controller is a low-cost, efficient solution for managing 1-3 phase gasoline and diesel generators. With features like automatic start, built-in alarms, and a user-friendly design, it ensures reliable operation and protection for your power needs. ## Description HGM400N series genset controllers integrate digitization, intelligentization and network technology which are used for genset automation and monitor control system of single unit to achieve automatic start/stop, data measurement, alarm protection and "three remote” (remote control, remote measuring and remote communication; SG485 module must be fitted). It fit with LCD display, optional languages interface (Chinese, English, Spanish, Turkish, Russian and French), and it is reliable and easy to use. HGM400N series genset controllers adopt micro-processor technology with precision parameters measuring, fixed value adjustment, time setting and set value adjusting and etc. All parameters can be configured from front panel or through USB interface by using PC. It can be widely used in all types of automatic genset control system with compact structure, advanced circuits, simple connections and high reliability. PERFORMANCE AND CHARACTERISTICS HGM400N series controller has two types HGM410N: ASM (Automatic Start Module)，it controls generator to start/stop by remote signal; HGM420N: AMF (Auto Mains Failure), updates based on HGM410N, moreover, has mains electric quantity monitoring and mains/generator automatic transfer control function, especially for automatic system composed by generator and mains. 1. 132x64 LCD with backlight, selectable language interface (Chinese, English, Spanish, Turkish, Russian and French), push-button operation; 2. Improved LCD wear-resistance and scratch resistance due to hard screen acrylic; 3. Silicon panel and pushbuttons for better operation in high/low temperature environment; 4. Suitable for 3-phase 4-wire, 3-phase 3-wire, single phase 2-wire, and 2-phase 3-wire systems with voltage 120/240V and frequency 50/60Hz; ## Features - Low cost controller designed to start/stop a generator manually and remotely - Suitable for 1-3 phase gasoline and diesel gensets - Designed for front panel mounting - Survives cranking dropouts - Generator protection, built-in alarms and warnings ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | SMARTGEN | | Part number | B0771NHSCG | | Item Weight | 420 g | | Product Dimensions | 12.6 x 10.9 x 4.4 cm; 420 g | | Item model number | HGM420N | | Power source type | Corded Electric | | Voltage | 240 Volts | | Wattage | 400 watts | | Item Package Quantity | 1 | | Special Features | Automatic Start | | Batteries included? | No | | Batteries Required? | No | ## Product Details - **Brand:** SMARTGEN - **Wattage:** 400 watts - **Fuel type:** Diesel - **Power source:** Corded Electric - **Item weight:** 0.42 Kilograms - **Voltage:** 240 Volts - **Special feature:** Automatic Start - **Engine type:** 4 Stroke - **Total power outlets:** 1 - **Frequency:** 60 Hz ## Images ![SMARTGEN HGM420N Automatic Start Generator Controller (AMF) - Image 1](https://m.media-amazon.com/images/I/619qzrsiWUL.jpg) ![SMARTGEN HGM420N Automatic Start Generator Controller (AMF) - Image 2](https://m.media-amazon.com/images/I/71N0IagOUaL.jpg) ![SMARTGEN HGM420N Automatic Start Generator Controller (AMF) - Image 3](https://m.media-amazon.com/images/I/61C3VRIASZL.jpg) ## Questions & Answers **Q: Re: the hgm420n, can the auto start on mains abnormal be inhibited so it can work as a 2 wire remote start installation?** A: Yes. The HGM420N model can be controlled via the remote start input or the front panel buttons as well. **Q: I have an off grid solar system. Can this unit be programmed to auto turn on the generator when the solar batteries run down to a certain level?** A: Unfortunately, this controller does not monitor the battery bank voltage. You can check this controller instead: SmartGen HGM4020T Mobile communication base station + dual power ATS+RS485 https://www.amazon.com/SmartGen-HGM4020T-Mobile-communication-station/dp/B07GH5HNV6 **Q: This product ships from? hgm400n series** A: Currently we are shipping this item from our stock in Europe. **Q: will this detect a power outage?** A: Yes. This controller detects power outages, start generator and switches load circuits to be powered from generator. When the grid comes back, it switches load circuits back and stops generator. All necessary delay settings could be configured. ## Frequently Bought Together - LASETO SMARTGEN HGM420N Automatic Start Generator Controller (AMF) - Savior Generator Petcock Fuel Gas Tank Switch Shut Off Valve for Predator Champion Generac Etq Homelite Husky Powermax Replace 0j0974 (16mm x 1.5mm) - YAMAKATO 196cc 212cc 224cc Generator Air Filter w/Housing Cover Box Air Cleaner Assembly for 3000 3500 4000 4500 watt Champion Predator Firman Generators… --- ## 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.co.uk/products/61317228-smartgen-hgm420n-automatic-start-generator-controller-amf](https://www.desertcart.co.uk/products/61317228-smartgen-hgm420n-automatic-start-generator-controller-amf) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-23*