RF + IR + BLE · Concept
RF20A
180 × 37 × 10
A battery-free concept: a solar panel under the key area keeps it charged, with RF, IR, BLE and voice on board. At 10 mm it is the thinnest design in the line.
Full specificationOwn factory · Shenzhen
Custom remote controls,
built in-house.
For TV/AV, smart home, hospitality and furniture brands. 32 engineers, 12 lines, one factory.
Established
2014Shenzhen
R&D
32engineers
Assembly
12remote-control lines
Tooling
100tools per year
Solutions
Four control environments. One engineering process.
The protocol and housing change. Our process does not.
TV & STB Remote Control OEM — IR + BLE Dual Mode | Serow
One handset for IR televisions and BLE set-top boxes. Voice, key mapping and input switching run as one programme, with white-label and CE/FCC/BQB.
Smart Home Remote Control ODM — Pairing & OTA | Serow
Protocol choice, pairing flow, OTA and white-label firmware built around your hub. BLE, 2.4G and Zigbee RF4CE, with a recovery path for failed pairing.
Hotel TV Remote Control — Sealed, Wipe-Clean | Serow
Sealed single-shell housing, double-shot legends that survive disinfectant, per-property language sets and cloned spares. 12 weeks from brief to pilot.
Motorised Furniture Remote — Low Power, Long Life | Serow
Low-power handsets for adjustable beds, recliners, sit-stand desks and shades. Key feel, battery life and mis-press protection sized to real daily use.
Vehicle and education programs are handled as project scopes.Ask about another application
Process
From a protocol document to a shipped device.
Six stages, one team from start to shipment. The weeks shown are typical ranges, not promises.
01
Brief and protocol review
Target, radio and markets.
Week 0–1
02
Concept and ID/MD
Ergonomics, keys, CMF, tooling.
Week 1–3
03
Electronics and firmware
PCB, radio, IR library, OTA.
Week 3–6
04
Prototype
Samples for fit and code.
Week 5–8
05
Validation and certification
Reliability tests and filing.
Week 8–12
06
Mass production
Tooling, pilot run, shipment.
Week 12+
Protocol fit
Know which protocols the remote supports before you commit.
We publish the boundary, not just the feature list.
| Protocol | Typical use | Status |
|---|---|---|
| Infrared (IR) | TV, AV, audio, HVAC | Supported |
| Bluetooth LE | Voice, pairing, OTA, apps | Supported |
| RF 433 / 868 MHz | Furniture, shades, room control | Supported |
| 2.4 GHz proprietary | AV integration, multi-room | Project-scoped |
| Wi-Fi | Cloud-connected control | Project-scoped |
| Zigbee / Matter | Ecosystem integration | Review required |
● Supported ○ Project-scoped · Review required
Build and test
Built and tested under one roof.
Assembly, tooling and the test lab sit in the same building.
61
Reliability tests
Climate, mechanical, RF, chemical.
29
Lab instruments
Chambers, salt fog, UV, ESD.
12
Assembly lines
Dedicated to remote controls.
100
Tools per year
Mould shop in-house.
Counts describe capability, not a per-model rating.
See the 61 testsPlatforms
Thirteen models. Start from the closest one.
Two IR-only handsets, nine IR and BLE voice remotes, two concept platforms.
IR only · Available
17A
183 × 44.45 × 16.5
An infrared handset developed for soundbars: TV, HDMI and dialogue keys on top, volume, subwoofer and listening modes below.
Full specification
2.4G RF + BLE · Available
RF16D
143 × 39 × 17
A compact Google voice remote on the HS6621C platform: 2.4 GHz RF plus BLE, with a four-key app row and a soft-touch body.
Full specification
Thirteen models, one table. Type, radio, range, chip, battery and size side by side.Compare the models
Selected work
Real deliveries, not renderings.
Client names stay private. Each profile gives scope and program length.
One remote for three TV generations.
Sealed IR and BLE handset that survives daily cleaning, shipped pre-configured per property.
- Sealed IR + BLE handset
- Batch configuration
- 5-language keypad
3
TV generations
12 wk
Prototype to pilot
5
Keypad languages
A pairing flow guests cannot break.
White-label BLE handset with OTA and a recovery path that needs no service call.
- BLE + 2.4G platform
- White-label firmware
- OTA update path
2
Radios
8 wk
Functional prototype
1
Recovery flow
Low-power control, used twice a day for years.
Larger keys and press protection, on the existing RF receiver.
- Custom ID and key layout
- RF 433 platform
- Drop and key-life testing
18 mo
Battery target
2
Tooling rounds
10 wk
To pilot run
Representative project profiles. Figures are rounded to describe scope.
Read all case profilesNews
Recent updates.
Company
Five centres, 32 engineers: who actually builds your remote
How Serow Controls is organised: five centres, 32 R&D engineers, one Shenzhen factory — and why handovers decide a programme more than headcount.
Company
One common mold base: tooling cost down 5–8% a year
Reusing a common mold base cut tooling cost 5–8% a year for three years, in a shop building about 100 moulds a year. The price: standardisation up front.
Quality
61 tests, five families, and the certificate numbers we do not publish
Reliability runs to 61 tests, five families, 29 instruments. Certificate numbers travel with the programme, not the website. Here is how tests are grouped.
Certifications
Certificates, linked to their scope.
Each certificate has a scope. Copies on request.
Before you ask
The questions every project starts with.
If the answer is not here, ask directly.
Ask a different questionWhat is the minimum order?
It depends on the platform and the level of change. A white-label program starts lower than a new enclosure with tooling; we quote both paths.
How long does a prototype take?
3 to 5 weeks after the specification is agreed on an existing platform. A new enclosure adds tooling and validation time.
Who owns the tooling and the design?
Agreed in writing before the project starts: your tooling, or tooling we develop with ownership transferred to you.
Who handles certification?
We prepare samples and technical files and work with the test house. The certificate goes to the brand owner or the factory, depending on the market.
Start a project
Bring us the protocol. We will bring the device.
Send the control target, the radio and the market. You get a written next step.
Typical reply within one business day