The device · preorder · first batch

A screen for the machine while the replacement takes its time.

An industrial touchscreen that boots straight into the operator panel you built in the free app. Mount it on the machine with the included bracket, hand it to the operators, take it back when the new panel arrives. Between outages it logs history, draws dashboards and reads the ladder live.

Preorder 7″ — $800 Preorder 10″ — $900

One-time price, no subscription · ships within 8 weeks of order · full refund any time before your unit ships · invoice / PO instead of a card

LineKeeper device standing beside a machine whose built-in HMI panel is dark, showing the operator control panel
Standing in for a dead panel — operator buttons on screen, line running
Rear of the LineKeeper device: Ethernet port, USB ports, DC power terminal and VESA mounting holes
The back: Ethernet, USB, DC power terminal, VESA mounting holes · reference hardware
  • 7″ or 10″ capacitive touchscreen, fanless industrial enclosure
  • Ethernet to the machine network, USB, DC power — plug in, it boots
  • Mounting bracket in the box: onto the machine or beside it
  • Panel and dashboards arrive from the app in two taps
  • Multiple machine profiles — switch machines, everything remembered
  • Updates in one tap with automatic rollback · no subscriptions, ever
Two sizes · same software

Pick the screen. Everything else is included.

Preorder · first batch

LineKeeper device 7″

$800one-time

The size that fits where the old panel was. Everything included: hardware, all software, updates, mounting bracket, power supply.

  • Operator panel, live tags, dashboards, history, live ladder
  • Allen-Bradley EtherNet/IP, Siemens S7, Modbus TCP, OPC UA
  • Telegram / WhatsApp alarms, no cloud required
  • Full refund any time before your unit ships
Preorder 7″ — $800 Card checkout by Stripe · shipping address collected there · ships within 8 weeks of order
Preorder · first batch

LineKeeper device 10″

$900one-time

More room for dashboards and ladder side by side. Same software, same box contents, bigger screen.

  • Everything in the 7″ unit
  • 10″ capacitive touchscreen
  • Best for a service kit that also does diagnostics on site
  • Full refund any time before your unit ships
Preorder 10″ — $900 Card checkout by Stripe · shipping address collected there · ships within 8 weeks of order
Honest limits

What it is not

  • Not a certified HMI and not a safety device — the PLC's safety program stays in charge; never use it for safety functions
  • A temporary bridge and a diagnostics tool, not a permanent replacement for the machine's panel
  • Enclosure ratings are the panel manufacturer's; the LineKeeper software carries no certification of its own
  • Writes are unlocked per tag by your own qualified person and stay your responsibility
Pay by invoice or PO instead →
Preorder terms

Four promises, written where the button is

Full refund before shippingAny time before your unit ships: one email, no questions, no restocking anything.
Ships within 8 weeks of orderThe window is named here, not in an email later. If we miss it by more than 2 weeks, we email everyone and offer a refund.
No subscriptionOne price, everything included. Software updates included, with automatic rollback.
Not a certified HMI, not a safety deviceA temporary bridge while the original panel is repaired or replaced — and a diagnostics tool between outages.
In the box

Everything to be on the machine in an hour

  • The LineKeeper device — 7″ or 10″ touchscreen, software installed
  • DC power supply
  • Mounting bracket (VESA or panel mount)
  • Ethernet cable
  • One-page recovery guide written for line staff
  • Your panels and dashboards — sent from the free app in two taps
Plain-words specs

What you plug in, and what you get

Screen7″ or 10″ capacitive touchGlove-friendly button sizes in the operator panel; readable from across the machine.
NetworkEthernet (RJ45) to the machine networkSame segment as the PLC. No cloud, no account; internet only for optional alarm messages and updates.
PowerDC 15–30 V screw terminalDesktop power supply included; the cabinet's 24 V DC rail works too.
Ports2× USB-A, USB-C, HDMI outUSB for a keyboard during setup or a memory stick with the panel export. RS-485/RS-232 terminal on the back, not used by the software today.
MountingVESA holes + bracket in the boxOnto the machine frame, a VESA arm on a post, or standing on the bench beside the dead panel.
EnclosureFanless, industrialRatings and certifications are the enclosure manufacturer's, per its datasheet; LineKeeper adds none of its own.
ProtocolsEtherNet/IP · Siemens S7 · Modbus TCP · OPC UAAllen-Bradley Logix tags discovered from the controller; S7 and Modbus by address. PLC program never modified.
SoftwarePanel · live tags · dashboards · history · ladderHistory raw 30 days, hourly 1 year, daily 5 years, on the device. L5X ladder with live values. Updates in one tap with rollback.
Mounting

Three ways to put it on the machine

Bracket on the frameThe included bracket bolts to the machine frame or the old panel's enclosure; the device hangs where the operators already look.
VESA arm on a postThe rear VESA holes take any standard arm — eye level on a machine post, swung out of the way for the repair crew.
On the benchNothing to drill: stand it beside the dead panel, plug in power and Ethernet, and the line is back under control.
Take it back when the panel returnsUnplug, keep it in the service kit. It stays useful — history, dashboards, live ladder for any machine on the network.
Invoice or purchase order

Reserve a unit without paying today

Pick a size, leave a contact. We hold your place in the first batch and email an invoice (NET-30 for plants) or the card link — nothing is charged until you decide, and a reservation is cancelled with one reply.

Meanwhile

Build the screen today in the free app

The app is the same kit on a phone: copy the panel's screen while it still works, run the machine from the phone the day it doesn't. When the device arrives, the panel moves onto it in two taps.

Download on theApp Store
FAQ

Before you press the button

When does it ship?

First-batch units ship within 8 weeks of order. You get a tracking number by email the day yours leaves. If we miss the window by more than 2 weeks, we email everyone and offer a full refund.

Can I get my money back?

Yes — a full refund at any time before your unit ships: one email, no questions. After delivery, a 30-day money-back guarantee applies.

What's in the box?

The device with the software installed, a DC power supply, a mounting bracket (VESA or panel mount), an Ethernet cable and a one-page recovery guide written for line staff.

Which PLCs does it work with?

Allen-Bradley ControlLogix and CompactLogix over EtherNet/IP (tags, UDTs, arrays, timers, counters and I/O modules discovered automatically), Siemens S7, Modbus TCP and OPC UA. The PLC program is never modified.

Is it a certified HMI?

No. LineKeeper is not a certified HMI and not a safety device. It is a temporary bridge while the original panel is repaired or replaced, and a diagnostics tool afterwards. The PLC's own safety program stays in charge; never use it for safety functions.

Can our plant pay by invoice or purchase order?

Yes. Reserve a unit, mention the PO, and we send an invoice — NET-30 for plants. Card payment on the site goes through Stripe; the shipping address is collected there.

Is there a subscription?

No. One price, everything included: hardware, all software features, software updates with automatic rollback. Nothing per tag, per seat or per month.

What happens to the screens I built in the app?

The app finds the device on the network and copies your panels and dashboards onto it in two taps — and back. Build the screen today in the free app; it moves onto the device when it arrives.