Home Dual-mode NRF/CMT DTU for Hoymiles HM 300-1500, HMS 300-2000 and HMT 1800-2250 with Display

Dual-mode NRF/CMT DTU for Hoymiles HM 300-1500, HMS 300-2000 and HMT 1800-2250 with Display

SKU: ELAB-DTU
Sale price 57,75 €
incl. VAT
excl. VAT
Checking inventory…

Need a larger quantity?

Need bulk pricing?

Get a formal quotation with lead time and volume pricing.

Request for Quote

For universities, companies, distributors, and project orders.

Add to Wishlist
The Dual-mode NRF/CMT DTU module comes with pre-installed latest version of OpenDTU firmware. The DTU module is designed for easy management and optimization of the HM, HMS, and HMT series of the Hoymiles inverters simultaneously, except the inverters with a “W” in the model number. Up to ten inverters can be connected.

  • Built-in NRF24L01+ AND CMT2300A IoT modules
  • Display and adjustment of current inverter limits
  • Switching inverter on and off
  • Support for multiple inverters (up to 10 inverters)
  • Supports MQTT with TLS encryption
  • Integration with Home Assistant MQTT auto-discovery
  • User-friendly web application with real-time data visualization
  • Firmware updates via web interface
  • Support for different time zones
  • Multi-language web interface (English, German, French)
  • Prometheus API extension (/api/prometheus/metrics)

After connecting a power supply (5V-2A,€ 4,99) via a USB-A to USB-C cable(€ 2,99 ), the DTU is recognized as an access point (AP). After entering the IP address and password, the DTU can be set up. Instructions are provided. If you need help with the setup, please contact us via email or whatsapp.

The 5V-2A power supply and the USB-A to USB-C cable are not included in the standard package to protect the environment, and they can be ordered as accessories.

Compatible Inverters Models using NRF24L01+ module (included already in this product):
  • Hoymiles HM-300-1T
  • Hoymiles HM-350-1T
  • Hoymiles HM-400-1T
  • Hoymiles HM-600-2T
  • Hoymiles HM-700-2T
  • Hoymiles HM-800-2T
  • Hoymiles HM-1000-4T
  • Hoymiles HM-1200-4T
  • Hoymiles HM-1500-4T
  • Solenso SOL-H350
  • Solenso SOL-H400
  • Solenso SOL-H800
  • TSUN TSOL-M350
  • TSUN TSOL-M800
  • TSUN TSOL-M1600

Compatible Inverters Models using CMT2300A module (included already in this product):
  • Hoymiles HMS-300-1T
  • Hoymiles HMS-350-1T
  • Hoymiles HMS-400-1T
  • Hoymiles HMS-450-1T
  • Hoymiles HMS-500-1T
  • Hoymiles HMS-600-2T
  • Hoymiles HMS-700-2T
  • Hoymiles HMS-800-2T
  • Hoymiles HMS-900-2T
  • Hoymiles HMS-1000-2T
  • Hoymiles HMS-1600-4T
  • Hoymiles HMS-1800-4T
  • Hoymiles HMS-2000-4T
  • Hoymiles HMT-1600-4T
  • Hoymiles HMT-1800-4T
  • Hoymiles HMT-2000-4T
  • Hoymiles HMT-1800-6T
  • Hoymiles HMT-2250-6T

Set up your device:

  1. Power on the DTU – Once connected to power, it will generate a WiFi network starting with "openDTU".
  2. Connect to the WiFi – Select the "openDTU" network and use the password: openDTU42.
  3. Log in – Open a browser and go to 192.168.4.1. Use the following credentials:
  • Username: admin
  • Password: openDTU42
  1. Configure Home WiFi – In the settings, enter your home WiFi name and password.
  2. Find the Device IP – After setup, the OpenDTU screen will display the new IP address assigned by your router.

 

Still have questions? We are happy to help! Please simply write to us via email or whatsapp.

 

Download

1. General Shipping Information

  • We provide reliable shipping services with a tracking number for each order.
  • Shipping addresses must be entered in English and should not contain special symbols, so that the courier system can recognize your location correctly.
  • Please make sure your shipping address is accurate before placing your order. We ship strictly according to the address provided at checkout.
  • In-stock orders are usually dispatched within 1 business day after order confirmation.
  • Estimated delivery times refer to the period after dispatch and do not include order processing time, weekends, public holidays, customs inspection, or force majeure delays.
  • If you need to cancel or modify your order, please contact us before the order is marked as “Shipped”. Once shipped, the order cannot be canceled or changed.

🚀 Need Faster Shipping?

If you require expedited shipping, please contact our customer support team at info@upenelab.com for a customized quote based on your destination.

2. Shipping Rates & Options

Shipping rates are calculated based on order value, destination, and available shipping methods. The final available options will be displayed at checkout.

2.1 Germany Domestic Shipping

Shipping Method Order Value Cost Est. Delivery
Deutsche Post €0.00 - €50.00 €4.95 2-4 Business Days
Deutsche Post Over €50.00 Free 2-4 Business Days
DHL Paket
(Faster Delivery)
€0.00 - €50.00 €6.95 1-3 Business Days
DHL Paket
(Faster Delivery)
€50.00 - €100.00 €2.00 1-3 Business Days
DHL Paket
(Faster Delivery)
Over €100.00 Free 1-3 Business Days

2.2 Selected EU Countries / Regions

Available EU shipping destinations are shown at checkout based on your shipping address. For orders shipped to selected EU countries or regions outside Germany, we use FedEx Regional Economy.

Shipping Method Order Value Cost Est. Delivery
FedEx Regional Economy €0.00 - €100.00 €7.95 3-5 Business Days
FedEx Regional Economy Over €100.00 Free 3-5 Business Days

EU orders may be fulfilled from our Munich warehouse or, when applicable, from our Shenzhen warehouse depending on inventory availability. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.

2.3 United States

Region Shipping Method Order Value Cost Est. Delivery
Continental U.S.
(50 States)
USPS Ground Advantage €0.00 - €45.00 €4.95 3-7 Business Days
USPS Ground Advantage Over €45.00 Free 3-7 Business Days
USPS Priority Mail €0.00 - €45.00 €16.95 1-4 Business Days
USPS Priority Mail Over €45.00 €14.95 1-4 Business Days
Non-Continental U.S.
(AK, HI, PR, etc.)
USPS Ground Advantage €0.00 - €60.00 €6.95 5-9 Business Days
USPS Ground Advantage Over €60.00 Free 5-9 Business Days

Non-Continental U.S. regions include Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, and U.S. Armed Forces addresses.

2.4 International Destinations Outside the EU

For selected international destinations outside the EU, including Switzerland, the United Kingdom, and Norway, shipping rates are as follows:

Order Amount Shipping Cost
€0.00 - €300.00 €19.95
Over €300.00 Free

For non-EU destinations, import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the recipient.

3. Warehouses & Fulfillment

Our products may be stored in our Munich, Arlington, and Shenzhen warehouses. The actual shipping warehouse depends on product availability and destination.

3.1 Munich Warehouse

For products stored in our Munich warehouse, we use Deutsche Post or DHL Paket for domestic deliveries within Germany. For selected EU destinations outside Germany, we use FedEx Regional Economy.

3.2 Arlington Warehouse

For products stored in our Arlington warehouse, we use USPS or UPS for deliveries within the United States.

3.3 Shenzhen Warehouse

For pre-order items or products fulfilled directly from our Shenzhen warehouse, we arrange reliable international shipping based on destination and inventory status. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.

4. Inventory, Pre-orders & Split Shipments

  • Inventory Status: Please check the product page for real-time stock information. If an item is out of stock in our local warehouses, it may be marked as “Pre-order”.
  • Pre-order Fulfillment: Pre-order items may be shipped directly from Shenzhen or restocked to a local warehouse first before final delivery.
  • Split Shipments: If your order contains both in-stock and pre-order items, we may ship them separately. No additional shipping fee will be charged for split shipments caused by our fulfillment arrangement.

5. Customs, Taxes & Delivery Issues

5.1 Customs and Taxes

For EU Member States:
Whether shipped from Germany or China, OpenELAB covers applicable import duties and taxes under DDP service where required. Customers in EU member states should not be charged additional import duties or VAT upon delivery.

Important Notice for Non-EU Countries:
For destinations outside the European Union, such as Switzerland, Norway, and the United Kingdom, import duties, taxes, and customs fees may be charged by local authorities upon delivery. These fees are the responsibility of the recipient.

5.2 Damaged, Delayed, or Lost Parcels

Please inspect your parcel upon delivery where possible. If you notice visible damage, please report it to the courier and contact us as soon as possible. This does not affect your statutory consumer rights.

If your parcel is delayed, lost, returned to sender, or the tracking information has not updated for an unusual period of time, please contact us at info@upenelab.com. We will assist you in checking the shipment status with the courier.

5.3 Incorrect Address or Failed Delivery

If a parcel cannot be delivered due to an incorrect or incomplete address provided by the customer, refusal of delivery, or failure to collect the parcel, additional shipping or return costs may apply.

6. VAT

For orders within the EU, VAT is collected at checkout according to the applicable destination rules. No additional VAT should be collected upon delivery for EU member state orders covered under our DDP shipping arrangement.

Customer Reviews

Based on 13 reviews
69%
(9)
31%
(4)
0%
(0)
0%
(0)
0%
(0)
T
Tom Ruijters

zeer goed

M
Morgan Wood
Solid quality and easy setup

This screen is a practical option for microcontroller or Raspberry Pi style display projects. Once connected, the output was stable and easy to work with.

Thank you for choosing OpenELAB. We are glad this product supported your use case.

T
Taylor Ross
Solid quality and easy setup

This screen is a practical option for microcontroller or Raspberry Pi style display projects. Once connected, the output was stable and easy to work with.

Thank you for choosing OpenELAB. We are glad this product supported your use case.

O
Oscar Clark
Reliable once configured

I used this display in a small UI prototype and it worked well after setup. The panel looked clear enough for dashboards, indicators and embedded demos.

Thanks for sharing your experience with the Dual-mode NRF/CMT DTU for Hoymiles HM 300-1500, HMS 300-2000 and HMT 1800-2250 with Display. Feedback like this helps other customers choose the right product for similar builds.

M
Martin Turner
Nice fit for the project

I bought this for a compact display project and it matched the product description. It is useful when you need a dedicated panel rather than repurposing old hardware.

Thank you for reviewing the Dual-mode NRF/CMT DTU for Hoymiles HM 300-1500, HMS 300-2000 and HMT 1800-2250 with Display. We are glad it worked well for your project.