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Home / Connecting Pace Monitor

Connecting Pace Monitor

About a minute of plugging in, once you have found the right socket on the front panel.

  • ≈ 1 minto plug in and connect
  • 0app to install
  • 0settings changed on the battery

Try the setup Steps for Pace →

Pace Monitor RJ45 socket and USB-C power socket

In the box

  • Pace Monitor with colour screen and RS485 / CAN interface
  • RJ45 communication cable
  • USB-C cable
Plug & play

The whole installation, in about a minute

The box reaches you already set up and checked for your Pace model. You need no app, driver or tool, and your battery settings stay untouched.

  1. 0:00
    1Plug

    The supplied cable goes into the RS485 port of your Pace battery; USB-C into any phone charger.

  2. 0:15
    2Connect

    Join the box’s Wi-Fi from your phone, pick your home network and set a password. No app to install.

  3. 1:00
    3Watch

    Open the dashboard in any browser, add it to Home Assistant, and set your alerts.

Pre-configured for your model

Try it

The setup, screen by screen

Exactly what you will see on the box and on your phone. Click Next.

PACE MONITOR

Starting...

The box

14:32

Your phone, as usual

1 / 4Plugged in

Cable in the RS485 port, USB-C in a charger. The box starts.

Simulation. The texts of the box are the real ones, in English as on the box.

Before you start

Almost nothing to prepare

A USB-C charger

A phone charger near the equipment or any USB port will do; the box needs less than 0.5 W.

2.4 GHz Wi-Fi where the box sits

Any ordinary home Wi-Fi on 2.4 GHz, which nearly every router provides. An internet line is optional for local use.

Your phone

For the one-minute setup through the box’s own Wi-Fi. No app, any browser.

Nothing else

No tools, no PC, no driver, no setting to change on the battery. Your box arrives prepared for your Pace model.

If something is off

What does the screen say?

The box’s screen tells you where it stands. Find your case below.

The screen stays black

The USB-C charger or cable is the usual suspect: try another one, or a computer’s USB port. The box needs very little, under 0.5 W.

The screen says “Setup: join the Wi-Fi”

The box has no network yet. Connect your phone to the MoniWatt-Setup-… Wi-Fi shown on screen; if no page opens, enter http://192.168.4.1 in the browser.

My home network is not in the list

The box only sees 2.4 GHz networks. Most routers broadcast both: pick the 2.4 GHz one, or type its name in “Or type its name”.

The screen shows an address but no values

First suspect: the cable. It must be fully clicked into the RS485 port of the battery, and with several batteries, in the port the steps below point to.

http://moniwatt.local does not open

Some phones do not resolve .local names. Type the address shown at the bottom of the screen instead, for example http://192.168.1.57.

Still stuck?

Write to [email protected] with a photo of the screen and of the port: a person answers.

In detail

Steps for Pace

Know the sockets

A Pace rack usually has several sockets that look alike: RJ45 sockets for the link between packs, an RJ45 for CAN, an RJ45 for RS485 next to it, and a smaller RJ11 for RS232, the one PbmsTools uses. Labels and layout change from one battery brand to another. Pace Monitor uses the RS485 socket next to CAN, not the link sockets. Not sure? Send us a photo of the panel before ordering.

1Check the socket is free

Most inverters talk to the rack over CAN, which leaves RS485 free. If your inverter uses that RS485 socket, tell us: we look at your setup before shipping.

2Connect and power

Plug the supplied RJ45 cable into the box and the rack, then power the box from a USB charger. The screen turns on.

Communication socket only. Never connect the box to the power terminals of the battery.

3Wi-Fi

Join the box’s setup Wi-Fi from your phone, choose your home network and set a password.

4Dashboard

Open http://moniwatt.local. Cells and pack values appear within seconds. Compare one cell voltage with the front panel or PbmsTools to be sure everything matches.

If it stays empty

  • Check that the cable is in the RS485 socket, not a link socket or CAN.
  • On some firmware, the RS485 protocol is chosen in PbmsTools: send us a screenshot of that page.
  • After changing the address switches, the BMS must be reset before the new address counts.
  • Send us the diagnostics page and a photo of the front panel.
Then

Once it runs, in one more minute

Home AssistantThree fields in the box, and every sensor appears on its own. The free CloudTick one box in the settings to see your system from anywhere, with alerts. What it showsEvery value, explained, and what the dashboard works out for you.

Questions about the installation

Do I need to switch anything off?

Not at all: the RS485 socket carries data at low voltage. Plug in with the battery on; no cover to remove.

Do I need an app or an account?

No. Setup is done in your phone’s browser, through the box’s own Wi-Fi. The free Cloud account is optional, only to see your system from away.

Will it change my settings?

No. The box only reads: the limits, switches and settings of your battery stay exactly as they are.

What if my Wi-Fi changes?

Use the settings page of the box. And if it cannot find your network for a few minutes, the box brings back its setup Wi-Fi on its own.

Can my installer set it up for me?

Yes. They get their own Cloud access to follow your system, and yours stays as it is.

All questions →

Keep reading

◎Features→▤Specifications→⌂Home Assistant→☁Cloud→⏱Runtime calculator→✎Guides→

See what the Pace board inside your rack knows

Order Pace Monitor, shipped on 10 November 2026 and tested on a Pace BMS before it leaves.

Plug & play: working in about a minute

Pre-order for €49Pre-order price · €59 from 10 Nov · ships on 10 November 2026 · free cancellation until dispatch