The SRK-M421 4 Inch Mobile Thermal Printer is a compact and portable direct thermal printer designed for mobile and on-the-go printing applications. Featuring 203 DPI resolution, support for thermal paper and labels, and a 3000mAh battery, it provides a practical printing solution for field operations, retail, logistics, delivery, ticketing, and point-of-service applications.

The SRK-M421 supports Bluetooth connectivity, with Wi-Fi available as an optional interface, allowing convenient wireless integration with compatible devices. It supports a wide range of 1D and 2D barcode formats, including CODE128, EAN128, CODE39, CODE93, EAN13, EAN8, UPC-A, UPC-E, ITF14, EAN14, and QR Code, making it suitable for transaction, identification, and labeling applications.

With support for thermal paper and labels, monochrome PCX and BMP graphics, barcode printing, paper detection, and black mark detection, the SRK-M421 offers a versatile portable printing platform for businesses requiring reliable printing away from fixed desktop printers.

Features:

• 4-inch mobile direct thermal printer.
• 203 DPI print resolution.
• Supports thermal paper and labels.
• Bluetooth connectivity with Wi-Fi optional.
• 3000mAh battery for mobile operation.
• Supports multiple 1D barcode formats.
• Supports QR Code printing.
• Supports monochrome PCX and BMP graphics.
• Downloadable graphics through flash memory.
• Transmissive sensor for paper detection.
• Reflective sensor for black mark detection.
• 5V DC, 2A input.
• Suitable for mobile and field printing applications.

Advantages:

• Portable battery-powered design for mobile printing.
• 203 DPI resolution provides clear print output.
• Wireless Bluetooth connectivity simplifies device integration.
• Thermal paper and label support provides application flexibility.
• Wide barcode support makes it suitable for retail and logistics.
• QR Code support enables 2D barcode printing.
• Compact design reduces dependency on fixed desktop printers.

Applications:

• Mobile POS and receipt printing.
• Retail and billing applications.
• Logistics and delivery printing.
• Warehouse barcode and label printing.
• Field service documentation.
• Ticket and transaction printing.
• Inventory and asset identification.
• Mobile business and point-of-service applications.

The SRK-M421 4 Inch Mobile Thermal Printer combines 203 DPI direct thermal printing, Bluetooth connectivity, barcode support, label printing, and a 3000mAh battery in a portable design for efficient mobile printing applications

Specifications

Shipping

All our orders are online over phone and email. After you place your order, we will send you an e-mail acknowledgement. Our phone, whatsapp and email addresses are available in the contact us section of website. We will start processing your order only after we have received payment. By placing an order on srkinnovations, you agree that you are buying for your business needs. If material is in stock or readily available, we dispatch in 1-3 workings business days. For special order or out of stock items delivery times are 2 weeks. If we are not able to fulfill your order then we will refund your entire amount within 15 business days. If order times exceed what we have committed to, we will contact you to determine if you want to execute the order with the new delivery time. We currently do not accept orders for international shipping on our website. If you are an international customer please email us your requirement at info@srkinnovations.com and we will determine whether we can fulfill your order or not.

Returns and Exchanges

We offer returns and exchanges only against manufacturing defects

Refund Policy

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.  To start a return, you can contact us at info@srkinnovations.com  Please note that returns will need to be sent to the following address: [110, New Dyneshwar Nagar, Manewada Road, Nagpur 440027].  Items sent back to us without first requesting a return will not be accepted. We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be able to get refunded amount on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too. If more than 15 business days have passed since we’ve approved your return, please contact us at info@srkinnovations.com

Damages and Issues

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items

Certain type of items cannot be returned, like custom products (such as special orders or personalized items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards

Exchanges

The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.