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Original HEM4000 Engine Controller Auto Start/Stop Remote Controling Module Relay fits for SmartGen

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HEM4000 Engine Controller Auto Start/Stop Remote Controling Module Relay speed regulation output+RS485 interface fits for SmartGen  DESCRIPTION: HEM4000 ENGINE CONTROLLER is used for controlling en...

HEM4000 Engine Controller Auto Start/Stop Remote Controling Module Relay speed regulation output+RS485 interface fits for SmartGen 


HEM4000 ENGINE CONTROLLER is used for controlling engine to realize engine auto start/stop, data measuring, alarm protection and “three remotes” (remote control, remote measuring and remote communication) functions. It provides speed regulation function, not only with relay speed-adjusting output but also with GOV interface, which can control all kinds of non-EFI engines’ speed.

HEM4000 ENGINE CONTROLLER adopts large liquid crystal display (LCD) and selectable Chinese and English interface with easy and reliable operation. Users can read engine working parameters from the LCD directly. 

HEM4000 ENGINE CONTROLLER uses 32 bits ARM micro-processor technology with the functions of precise parameters measuring, fixed value adjustment, time setting and threshold adjusting etc. The majority of parameters can be set on the front panel and all the parameters can be set and monitored via USB port or RS485 port by using PC. With compact structure, simple connections and high reliability, it can be widely used in a number of engine control systems, which include water pump system, beacon system, air compressor, engineering machinery system and so on.


  1. 132x64 LCD with backlight, multilingual interface (including English and Chinese languages) and easy operating interface;

  2. Hard acrylic screen protection with improved wear-resistance and scratch resistance; 

  3. Silicon panel and pushbuttons for better operation in high and low temperature environment;

  4. RS485 communication port to realize remote controlling, remote measuring, remote communication via ModBus protocol;

  5. 6-way analog sensors, 3-way fixed resistor sensors, and 3-way flexible sensors, which can be configured as resistor/current/ voltage type sensors;

  6. Multiple temperature, pressure and level sensor curves can be used and user-defined directly;

  7. Precisely collecting various engine parameters provides complete protection functions, such as engine high water temperature/ low oil pressure, over speed and under speed protection;

  8. With mechanical speed regulation function and GOV speed adjustment function, it can control engine speed up and down manually; 

  9. Idle/high speed switchover function;

  10. All outputs are relay outputs;

  11. With the function of parameter setting, it allows users to change and set the parameters and at the same time they will be stored in the internal FLASH memorizer and cannot be lost in case of power outage; 

  12. Alternate crank disconnect conditions (engine speed, oil pressure);

  13. Engine speed can be obtained by speed sensor or W/L charging generator;

  14. Wide power supply range DC(8~35)V, which is suitable to different starting battery voltage environment;

  15. Event log, real-time clock, scheduled start & stop functions (start one time once a day/week/month);

  16. Heater, cooler and fuel pump control functions;

  17. Maintenance function. Actions (warning or shutdown) can be set when maintenance time due;

  18. All parameters adopt digital adjustment instead of conventional analog modulation with a potentiometer, which improves the reliability and stability;

  19. Waterproof security level IP65 of the front panel due to the rubber seal in the case design;

  20. Metal fixing clips enable perfect performance in high temperature environment; 

  21. Modular design, flame retardant ABS enclosure, pluggable connecting terminals and embedded installation way; Structure is compact and the installation is very easy.

1. Please make sure it will fit your machine before purchasing it. If you are not 100% sure this is what you need, please find out your engine model, series number and contact our Customer-service.
2. Please double check the part number of your item, matching information is for reference only.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!
3. Communication is the best way to solve the problem. If you have any problems after you receive the package, please contact us in time, before opening a return or case.
4.For more information please contact us info@diselmart.com. We will reply you in 24 hours.

Returns Policy

Wе аdорt a 30 dауѕ rеturn роlісу whісh mеаnѕ thаt аll рrоduсtѕ рurсhаѕеd оn оur wеbѕіtе mау bе rеturnеd tо uѕ wіthіn thе tіmе-frаmе. Yоu nееd tо соntасt uѕ wіthіn 30 dауѕ аftеr thе рrоduсt(ѕ) саmе іntо уоur роѕѕеѕѕіоn аnd thе рrоduсt(ѕ) muѕt bе rеturnеd tо uѕ wіthоut аnу unduе dеlауѕ. Rеturnеd рrоduсtѕ muѕt bе rеturnеd іn thе ѕаmе соndіtіоn аѕ thеу wеrе ѕеnt аnd thеу muѕt bе ѕеnt іn іtѕ оrіgіnаl расkаgіng. Returned іtеmѕ оvеr 30 days аrе ѕubjесt to a restocking fее.

Applicable circumstances for return and exchange:

Merchandise eligible for return or exchange must be:

– New, unused and in original condition;

–The problem of replacing the product is not man-made damage;

– Inclusive of all original hangtags, packaging, and components at the time of return or exchange.

– Accompanied by a proof of purchase (order confirmation email or number).

The return process

(1) You must first contact us providing us with the order number and reason for the return/exchange with our contact form. we will process the return application within 48 hours and reply to the processing result

(2) After the customer receives the response of the processing result, send it back and tell us the tracking number

(3) (if exchange): After receives return goods, we will re-ship and update the tracking number

Refund process

(1) After the website receives the returned product, it will take 3 days to process it. If there is no problem with the returned product, the refund will be received within 3 days

(2) What to do if the refund is not received:

If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted.

There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us here

Feel frее tо contact uѕ rаthеr thаn ореn any case іf уоu have any рrоblеm, wе'll try оur bеѕt tо provide уоu thе bеѕt service.

After-sales contact information

Email: info@dieselmart.com

Whatsapp: +86 15157377230


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.Shipping address Please provide us with correct detailed shipping Address including postcode, and correct phone number that the carrier can contact you for delivery.

Handing Time

We ship within 3 business days upon receipt of payment average.

Delivery Time:

Standard shipping(USPS, FAR Internation, E Packet): To USA 7-14 Workdays, To other countries 10-20 Workdays.

Expedited Shipping (FedEx/DHL/UPS): To USA 2-6 Workdays, To other countries 3-8 Workdays.

This is normal condition, but sometimes international delivery is highly depended on the courier company and local customs/duties. Freight (Shipping Charges) The freight is calculated by weight and country. Different products and address will be of different freight. Please check directly at check-out page.


Import duties, tax and charges are not included in the price listed or freight. These charges are buyer's responsibility.

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