Videos · Smart Window Cleaning Robot · ST-K1
Commercial Window Cleaning Robot Setup — ST-K1 First-Run Demo on High-Rise Glass
Forty-two seconds of the ST-K1 being prepared for glass: the power train, the remote, the tank, the rope. What is on screen is the part of a commercial window cleaning robot deployment that decides whether the unit survives a season — the setup, not the spec sheet. Specifications and pricing live on the ST-K1 product page.
Quick answer
Setting up the ST-K1 for a commercial window cleaning run takes four connections and one habit: fit the safety rope first, fill the 115 mL tank through the wide opening, seat the mop pad, then connect the 24 V / 3 A adapter and plug it into mains power. The unit then holds at 3400 Pa and sprays from both sides of the body through a 2 × 2 nozzle head fed by two pumps. Everything else — 11 cleaning modes, four edge sensors, the 20–30 minute UPS hold — is running in the background before the first pass.
ST-K1 at a glance — the numbers behind the setup
As an automatic window cleaning robot, the ST-K1 hands the pass itself to the controller: gyroscope path planning decides the route, the 2 × 2 air-pressure sensor array keeps suction balanced across sealant lines, and the operator only chooses a mode. That is the difference between a robotic window cleaner and a remote-controlled one — the setup below is the only manual work in the whole cycle.
What has to be connected before the robot touches glass
The clip is a bench setup, filmed before the machine goes anywhere near a window. That order is worth copying exactly, because every item on the table has a failure mode attached to it:
- Safety rope. Anchor it before the unit is lifted. On a commercial window cleaning robot the rope is the layer that works when the electronics do not, so it goes on first, not last.
- 115 mL water tank. The tank is externally visible and opens wide, so it can be refilled mid-job without unseating the robot. Fill it before the first pass, not after a dry streak appears.
- Mop pad. Seat it flat. A pad with a folded corner is the single most common cause of a smear that gets blamed on suction.
- 2.4G remote. Range is up to 20 m with voice prompts, so the operator can stand back from the glass and still hear which mode is running.
- 24 V / 3 A adapter into mains. The last connection in the clip, and the one that powers the hold. AC 100–240 V input means the same unit ships to 110 V and 220 V markets.
The box carries the rest: AC wire, water can for filling, and the manual. Nothing else is required for a first run, which is the point — a technician should be cleaning within minutes of opening the carton.
First-run sequence on a high-rise pane
The order below is the one we recommend for any high rise window cleaning robot deployment, and it is the same order the clip follows on the bench — power train and rope before anything touches glass.
- Anchor the rope to a fixed point above the working height, with enough slack for the full pane and no more.
- Confirm the working area. The ST-K1 needs at least 60 × 40 cm of flat glass. Below that, suction is fighting the frame instead of holding the body.
- Place the unit at the top edge, pad side to glass, and let it pull down before releasing your hand.
- Select a mode on the remote or in the app. Eleven modes cover everything from a spot clean to a full facade pass; two spray settings choose between light mist and continuous wetting.
- Watch the first corner. That is where the four collision edge-detection sensors earn their place — the unit should stop at the boundary and turn, not bump and slide.
- Test the UPS deliberately, once. Pull mains power with the robot on the glass and confirm it holds and alarms for 20–30 minutes. Do it the first day, not the first emergency.
At roughly 3 minutes per square metre, a standard 1 m² pane takes about three minutes, and that is the figure that prices a commercial window cleaning robot contract: per-visit quotes are built on minutes per square metre, not on purchase price. A floor of curtain wall is a scheduling question, not a cleaning question — see how many window cleaning robots a building actually needs before you size a fleet.
Five checks before a fleet goes live
A single unit on a balcony is a gadget. Twenty units on a rota is an operation, and the setup in the clip is the template every technician should reproduce identically — that is what separates a commercial window cleaning robot rollout from a one-off purchase.
| Check | Pass condition | Why it fails in the field |
|---|---|---|
| Rope anchored | Fixed point above the pane, no knot on the frame edge | Rope tied to a window handle is the most common audit finding |
| Pad seated flat | No lifted corner, no grit trapped | A folded corner smears and gets blamed on suction |
| Tank filled and visible | Level readable without opening the body | Dry passes burn pads and leave film |
| Edge detection verified | Unit turns at the boundary on frameless glass | Frameless panes give nothing to bump against |
| UPS tested under load | Holds and alarms 20–30 min on mains loss | An untested backup is an assumption, not a safety layer |
For tenders and client-facing documentation, the language that holds up in a contract is set out in writing anti-fall requirements into a tender specification.
What the setup tells you about the machine
Read the bench sequence as a specification, and four design decisions show up before the robot is even on glass.
1. Mains power with a real backup, not a battery robot
As a glass cleaning robot it is judged on one number, and the ST-K1 runs from AC 100–240 V through a 24 V / 3 A adapter, with a 500 mAh Li-ion pack inside whose job is the 20–30 minute hold after a power cut, with an alarm. That architecture is deliberate: a mains-powered commercial window cleaning robot can run a long facade pass at 3400 Pa without derating as a battery drains. The battery is a safety layer, not the power source.
2. Two pumps feeding a 2 × 2 head
Double-sided spray with two independent pumps means the leading edge of the pad stays wet in whichever direction the body is travelling. On single-sided units the return pass drags a drying pad across wet glass, which is where the grey film in low sun comes from.
3. A square 240 × 240 mm body with a 76 mm profile
Square corners reach into the corner of a pane where a round chassis leaves a crescent untouched, and 76 mm lets the body pass under narrow frames and around mullions. It is also light enough to lift onto a window one-handed, which matters when one technician is moving between rooms.
4. Frameless glass treated as the default case
Four collision edge-detection sensors plus gyroscope path planning are what let a high rise window cleaning robot work on frameless balustrades, balcony panels and modern curtain wall, where there is no perimeter frame to stop against. Air-pressure anti-fall logic sits behind that: if the seal is compromised, the unit reacts before it loses hold.
Industrial and commercial use: what changes on site
An industrial window cleaning robot and a household one differ less in suction than in what surrounds the job. Whether the brief is a window cleaning robot for big building work, a hotel, or a window cleaning robot exterior schedule on a skyscraper, three things change — and each of them is a professional window cleaning robot requirement rather than a domestic one:
- Access and anchoring. Exterior glass at height needs a documented anchor point per elevation, not a rope tied to whatever is nearest. A skyscraper window cleaning robot schedule is audited on that document, not on the machine.
- Consumables on a rota. Pads are the part that wears. Running cost per square metre is set by pad life, not by purchase price — spare parts and consumables covers the arithmetic.
- Batch consistency. Ten units on one site must behave the same. That is a supplier question: same specification on the second and tenth shipment, with QC records to prove it.
Suction itself is a wind-load question at height, not a marketing number — the working figure for a given elevation is covered in suction ratings and wind load.
Two other models worth quoting alongside the ST-K1
The ST-K1 is the square-body option: frameless glass, curtain wall, floor-to-ceiling panes. Two other units cover the jobs this shape cannot do, and both are worth quoting on the same call rather than sending a buyer through the whole range.
- X9 — dual water spray with 2,800–3,200 Pa variable suction, 70 mL tank and app control. Quote it when spray coverage is the objection. X9 dual spray demo.
- G8 Slim kit — 72 mm body, panes down to 150 mm, 145 cm telescopic pole and a 27 cm triangular head for balcony, gable and transom glass. G8 telescopic pole demo.
The full side-by-side specification is on the window cleaning robot comparison page, and every demo we have published sits in the demo video library.
OEM, private label, MOQ and samples
The ST-K1 is a private-mould product with more than 12 years of window cleaning robot OEM customisation behind it. Two options cover most wholesale projects: custom logo printing on the unit, and a custom colour box built around your own artwork. Retailer-specific packaging, manual language versions and accessory combinations are normally settled at the same stage — before the order, not after.
Volume pricing currently runs from $91.50 per unit at 1–999 pieces, to $73 at 1,000–2,999, to $71 at 3,000 and above; confirm the live tier with sales before quoting your own market. Samples can be arranged so suction, spray and edge detection are tested on your own glass first, and every unit carries a 12-month warranty with spare parts available for units in service.
If you are new to importing this category, the buying sequence is set out in the wholesale window cleaning robot sourcing guide, and the full range sits on the wholesale smart window cleaning robot page.
Who buys the ST-K1
- Smart-home distributors and retailers adding a square window cleaning robot to a line that already sells round models.
- Property management companies running scheduled exterior glass across a portfolio of buildings.
- Hotel and facility maintenance teams running a hotel window cleaning robot rota across lobby and guest-room glass.
- Glass and facade engineering contractors who need the robot specified into a handover package.
- Professional cleaning service providers quoting per-visit contracts and looking for equipment that survives repeat use.
Questions buyers ask after watching this setup
What does the ST-K1 setup demo actually show?
The bench stage of a first run: the robot body, the 115 mL water tank and filling bottle, the 2.4G remote, the 24 V / 3 A power adapter and the lead going into mains power. It is the sequence a technician repeats before the unit is lifted onto glass, not a cleaning result.
How long does setup take before the first clean?
Four connections and one habit: rope anchored, tank filled, pad seated, adapter into mains. Anyone who has run a window robot before is cleaning within a few minutes; the manual covers the same order for a first-time operator. Nothing else is needed out of the box beyond the AC wire and the water can.
Do I need the app, or is the remote enough?
The 2.4G remote reaches up to 20 m and gives voice prompts, so it is enough on its own. The companion app mirrors the same functions from a phone with an English interface. For a fleet, the remote is usually the training tool and the app is what supervisors use.
Does it run on mains power or on the battery?
On mains: AC 100–240 V in, 24 V / 3 A out, 72 W rated, which is why the same unit sells into 110 V and 220 V markets. The 500 mAh Li-ion pack exists for the 20–30 minute hold with alarm after a power cut — a safety layer, not the working power source.
Can it work on frameless or floor-to-ceiling glass?
Yes — that is the case it is designed around. Four collision edge-detection sensors read the glass boundary and gyroscope path planning covers the pane, so no perimeter frame is required. The minimum working area is 60 × 40 cm; below that there is not enough flat glass to hold against.
What does the 20–30 minute UPS hold actually protect?
It keeps the unit attached to the glass after mains loss and raises an alarm, so nobody has to reach out to retrieve it. Air-pressure anti-fall and anti-collision logic sit alongside it. Test it deliberately on day one rather than discovering the behaviour during an outage.
What should I ask for before a bulk order?
The current test video, the QC record for your batch, the spare-parts list for your market, and the certification and packaging artwork sign-off. All four are normal parts of a wholesale conversation and all four are worth having on file — the current specification sits on the ST-K1 product page. Request the rest through the contact form with your target market and volume.
Planning a commercial deployment or a private-label run?
Send your target market, annual volume and packaging requirement — you will get the current price tier, sample lead time and the spare-parts list for a commercial window cleaning robot order in one reply.