Star Micronics SM-T400i
Rugged four-inch mobile receipt and label printing for field operations.
The Star Micronics SM-T400i is a portable direct-thermal printer for wide receipts, labels, delivery documents, citations, and service reports. Its 104 mm print width, Bluetooth and serial connectivity, IP54-rated enclosure, and drop-in media loading support mobile work in retail, transportation, public safety, healthcare, and logistics.
The current 39635010 configuration pairs the printer with a 7.2 V, 2,500 mAh battery and charger. It prints at up to 110 mm per second and weighs 586 g including the battery.
Key Specifications
- Print method: Direct line thermal
- Resolution: 203 dpi
- Maximum print width: 104 mm
- Print speed: Up to 110 mm/sec
- Media handling: Direct-thermal receipts and labels; transmissive and reflective sensors
- Connectivity: Bluetooth 2.1 SPP / iAP and RS-232C serial
- Battery / power: 7.2 V, 2,500 mAh lithium-ion battery with charger
- Durability / environmental sealing: IP54-rated enclosure
- Dimensions and weight: 150.9 × 135.7 × 63.3 mm; 586 g including battery
- Warranty: 1-year limited manufacturer warranty
In the Box
- SM-T400i printer
- AC adapter / charger
- Battery pack
- Belt clip
- Setup sheet
Compatible media, a serial cable, and other field accessories are sold separately unless the selected configuration explicitly includes them.
Wide Mobile Documents
A 104 mm print area for receipts and labels
The wide print path supports information-dense receipts, shipping and inventory labels, inspection records, and service documents while drop-in loading keeps media changes straightforward away from the counter.
Bluetooth and Serial Connectivity
Connect current mobile and field systems
The current no-MSR model supports Bluetooth and serial workflows across compatible iOS, Android, and Windows applications, with Star portable-printer software available for supported deployments.
Field-Ready Construction
IP54 protection in a portable design
The sealed housing helps resist dust and splashes while the included belt clip keeps the printer close at hand for route, public-safety, warehouse, and service teams.
Current-Generation Power
2,500 mAh battery for extended mobile use
The current configuration uses a higher-capacity battery than earlier SM-T400i literature. This page follows the current exact-model specifications rather than mixing values from discontinued predecessors.
Looking for Compatible Receipt Paper?
Use Star Micronics 112 mm direct-thermal receipt paper for dependable feeding and print quality in the SM-T400i wide mobile print path.
Need help matching the right media? Call our POS specialists at 800-903-6571.
Shop Compatible Star Receipt Paper →Shop SM-T400i Models
39635010
SM-T400i, Portable Thermal Rugged 4" Tear Bar, iOS, Android, Windows Bluetooth/Serial, Gray, No MSR, Charger Included
Shop SM-T400i Accessories
39599020
Shoulder Strap for Star Mobile Printers
39569350
SM-T400 Replacement Battery Pack (Batteries must be shipped via ground shipping)
39569410
SM-T400 Battery Charger
37966500
Paper SM-T400I: 112mm Width, 80 ft Length, 12 Rolls/Case, Blue Core (TRF112-D50-C12, 12PK)
37967080
2 Year Swap-A-Star Enhanced Warranty for Star Micronics Portable Printers. Adds Next Business Day Replacement Via 2nd Day Air to Standard 2 Year Warranty. Can Be Added Up to 30 Days After Product Purchase. Note: This Warranty Does Not Carry Over to the Replacement Printer.
39569360
Star Mobile Printer Car Charger for SM-S200, SM-S220i, SM-S230i, SM-T300i, and SM-T400i
39569430
Star Micronics battery charger for SM-S200, SM-S220i, SM-S230i, SM-T300, SM-T300i, and SM-T400i
39569370
Star Micronics 4-bay battery charger for SM-T400i mobile printers.
39569351
Star Micronics SM-T400i spare battery pack. Batteries must be shipped by ground. NCNR (non-cancelable, non-returnable).