Print shipping labels from your iPad. Inventory labels from a workstation. Returns labels from across the room. One small box manages all your thermal printers and routes every job to the right one automatically.
Stop walking to the printer. Stop swapping cables. Stop guessing which printer has the right labels loaded.
Plug in up to 6+ thermal printers and manage them all from one place. Give each a nickname ("Shipping Left", "Returns", "Inventory") and control which are shared on the network. Twin Turbo users: each spool gets its own profile.
Assign roles to printers — shipping, production, returns, inventory — and jobs route to the right one. Or let the server auto-match by label size. If you send a 4x6 to a printer loaded with 1x2.5, it rejects and tells you which printer to use instead.
iPhone, iPad, Mac, Windows, Android, Chromebook — everything just works. AirPrint for Apple devices, network sharing for Windows, and a full REST API for custom integrations. No drivers to install on any client.
Every standard Dymo label (54 stocks), Brother QL die-cut and continuous rolls, Zebra thermal sizes, Rollo, and standard paper. The server knows the exact dimensions of every label — no manual configuration.
Optional 3.5" touchscreen turns the box into a standalone kiosk. See printer status at a glance, manage WiFi, browse the print queue, and check for updates. Or manage everything from any browser on your network — same interface.
Every job is tracked — queued, printing, completed, or failed with error details. Failed jobs retry automatically. Offline printers are caught before the job even queues. Full history and performance metrics per printer.
Print up to 50 labels in a single request. Design labels with text, barcodes, QR codes, and images using the built-in template system. Preview any label as a PDF before committing to paper.
Drivers for every supported printer are pre-installed. Plug in a new printer and it's discovered and ready in 30 seconds. The server auto-detects the right driver and label format — no configuration needed.
Designed to run 24/7 without maintenance. Self-healing — if anything crashes, it restarts automatically. Disk and memory managed in the background. Boots to operational in about 30 seconds after a power cycle.
Checks for updates automatically. One tap on the touchscreen (or from the StringsTheory INV app) to install. If anything goes wrong during an update, it rolls back to the previous version automatically.
No cloud account. No subscription. No data leaves your network. Admin controls protect system settings. Print jobs flow over your LAN only. Zero telemetry, zero tracking.
Export your entire configuration — printer profiles, roles, settings — and import it on another unit. Run the same setup across multiple locations with consistent behavior.
Plug in via USB — drivers are pre-installed, no configuration needed.
| Brand | Models | Connection |
|---|---|---|
| Dymo | LabelWriter 300, 310, 315, 320, 330, 400, 450, 450 Turbo, 450 Twin Turbo, 450 DUO, 4XL, 5XL, SE450, Wireless | USB |
| Brother | QL-700, QL-800, QL-1100 | USB |
| Zebra | ZD420, GK420, ZP450 | USB |
| Rollo | 4x6 Thermal | USB |
| Generic | Any CUPS-compatible printer | USB / Network |
Every major platform works out of the box — no drivers, no setup on the client side. Choose which printers are visible on the network per-printer.
| Your device | How it connects | Setup required |
|---|---|---|
| iPhone / iPad / Mac | AirPrint — shows up automatically | None |
| Android / Chromebook | Mopria — shows up automatically | None |
| Windows PC | Network printer (SMB) | Add printer once |
| StringsTheory INV | Auto-discovery | None |
| Custom apps | REST API (35 endpoints) | HTTP calls |
| Printers supported | Dymo, Brother, Zebra, Rollo, and any CUPS-compatible printer |
| Max printers | 6+ via USB hub |
| Label stocks | 80+ built-in across all brands |
| Batch printing | Up to 50 labels per request |
| Network protocols | AirPrint, Mopria (Android), Windows (SMB), REST API |
| Display | Optional 3.5" touchscreen or any web browser |
| Boot time | ~30 seconds to ready |
| Updates | Automatic over-the-air with rollback protection |
| Uptime | 24/7 with self-healing and auto-restart |
| Cloud dependency | None — fully local, no subscription, no telemetry |
| Developer API | 35 REST endpoints with JSON, auto-discovery for custom integrations |
Plug your USB thermal printers into the unit. It detects each one automatically within 30 seconds — no driver install, no configuration.
Connect via Ethernet or use the touchscreen to join WiFi. The unit announces itself to every device on your network.
Give each printer a name and a role — shipping, production, returns, inventory. The server handles the rest.
Your printers appear automatically on iPhones, iPads, Macs, and Android devices. Windows sees them as network printers. No software to install on any client.
One unit. All your printers. Every device on your network. No cloud, no subscription, no monthly fees.