One product, two faces
Both devices share a 3.4″ wall footprint, the same firmware and the same rule: one number, one sentence, two buttons. The square keeps everything the round does and adds four corners — every numbered item below says which face carries it and how.
Side by side, 1:1
400 px = 3.4″ · Dining zone, a quiet Tuesday at 3:42 PM
4
Everything is where it should be.
Round · 2.9″ face, 6.6 in²
Everything a single room needs. Anything site-wide moves to a second screen behind the plan pill.
4
Everything is where it should be.
Square · 2.9×2.9″ face, 8.4 in²
Same centre, four extra corners. They hold the plan and the neighbouring zones, so no second screen exists.
Every feature, and where it lives
Nine on the glass, five that appear when something changes, three behind a service hold
{{ f.n }}
{{ f.name }}
{{ f.note }}
Square
{{ f.squareChip }}
{{ f.square }}
The five states that change the face
Round then square, in each pair — same event, different amount of room
Override
73°
Held at 72° until 6 PM
Then back to the plan.
Override · Alex M.
73°
Held at 72° until 6 PM
Every ± press is an override, so it has to state its own end: held value, expiry, and that the plan resumes. Overrides expire at the next scheduled setpoint change — the square also names who set it and ambers the Now chip so the suspension is visible, not inferred.
Peak event
72°
Cooled early. Back at 7 PM.
Peak event
72°
Cooled early. Kitchen untouched.
Both faces explain the event honestly, per zone. Only the square has room for the reply, so the GM can accept or opt out on the wall instead of phoning corporate.
Service needed
78°
A technician has been called.
Service needed
78°
Running for hours, not getting there.
Round states the fault; square attaches the resolution. The ETA row is the one thing a manager would otherwise call someone to learn.
Closed
62°
Opens 7 AM. The plan brings it back.
Range stop
62°
That is as far as this room goes.
A wider range is set in the app.
Identical on both faces: the buttons lock and the reason is written out. There is no keypad and no manager code — the ±2° stop is final on the glass, and anything past it is a decision made in the console where it is attributed to a person. The device never becomes a place to negotiate.
No connection
70°
Still running today's plan.
No connection
70°
Still running today's plan.
The schedule keeps running on-device either way. The square holds seven days of saved readings, so a technician can see what happened while the link was down.
Three screens for the technician, none for the guest
Every competitor puts these behind a Menu button, which is how a thermostat becomes a settings tree. Both faces keep them off the glass entirely and behind a single deliberate hold — one hidden gesture on the whole device, not two — the same convention the trade already expects, where a service screen times out on its own rather than waiting to be dismissed. Nothing on any of the three screens is editable: the numbers are evidence, and the actions that follow live in the fleet console.
Diagnostics
Dining · last 24 h
Cycles · longest
14 · 41 min
Terminals wired
Y1 Y2 W1 G
Read-only · returns to Dining in 60 s
15 · Diagnostics
Runtime and cycle counts, what the sensor actually reads, and which terminals are landed. Short-cycle count is called out because it is the one number that predicts the next failure. The filter line is a reminder, never dressed as a fault. Anything about radios or the link moved to Connection, so this page answers one question: how is the equipment running.
Last equipment fault
E91 comms
Cleared Sep 7, 2:06 PM
RTU-2
Read-only · returns to Dining in 60 s
16 · Connection
This page is why the status mark on the home face does not need to be pressable. The mark reports — three radios in one glyph — and the numbers behind it live where a technician is already looking. Equipment fault codes come from the RTU, not from this device, so the code is named with its unit and timestamp rather than interpreted.
Zone · unit
Dining · RTU-2
by R. Ortiz · job 40218
Not decommissioned
Read-only · returns to Dining in 60 s
17 · About
The identity a technician has to read aloud on the phone: model, serial, firmware, MAC, and the binding — site, zone, and which rooftop unit this device commands. The install record answers “who touched this last,” and the service number is the one field an installer programs, because the alternative is a manager guessing who to call.
On the round face
6.6 in² will not hold ten label-value pairs at a readable size, so the round device paginates: Diagnostics, Connection, About, with page dots and a next arrow. The square puts the same three behind tabs. Same three-second hold on the zone name — the gesture does not change with the shape, and neither face has a second hidden gesture.
Rules for both
No edit affordances, no reset, no factory wipe, no keypad, no wiring test that energises equipment from the wall. A technician who needs to change something opens the job in the installer app, where the change is attributed to a person and a job number. The device only testifies.
Still not shipping
A fault-code glossary on the glass, a live wiring diagram, and any “advanced” page a curious manager can reach. Three additions, and none of them is a menu.
One rough-in, two enclosures
Inches (mm) · drawn 1 px = 0.017 in · rev C
The two devices share a backplate, a terminal block, a depth and a hole pattern. An installer who has wired one has wired both, and a site can swap an enclosure without touching the wall — which is the whole argument for shipping two faces instead of two products.
Veylo Pro R · front
480×480 round LCD · 166 ppi · 7.4 oz
Veylo Pro S · front
600×600 LCD · 207 ppi · 8.1 oz · PIR lens
Side section · shared
0.22 backplate + 0.64 body. Identical on both enclosures.
Terminal block
R
C
Y1
Y2
W1
W2
G
O/B
S1
S2
1.30 × 0.90 knockout
Backplate · one part number
2 × #6-32 on 60 mm centres · single-gang compatible
Common to both
Wall footprint · depth
3.40 · 0.86 in
Backplate · hole centres
shared · 2.36 in
Terminals
10 pos · 18–22 AWG
Power
24 VAC 20 VA · C required
Radios
Wi‑Fi 2.4 GHz · BLE 5.2 · LTE‑M
Backup cell
LiFePO₄ · 4 h of reporting
Operating
32–122°F · 5–90% RH
What differs
Active glass
6.6 in²
8.4 in²
Pixel density
166 ppi
207 ppi
Touch zones
2 × 26 mm
2 × 28 mm
Seven rows, and only two of them change what the device can do: the glass area, and the corner that holds a PIR lens. Everything else is the same bill of materials.
Where this lands
Ship both. The round is the single-zone device — one room, one wall, nothing to learn. The square is the site device: it carries the plan and the neighbouring zones on the glass, which is the difference between a thermostat and a control point.