Brand comparison
Differences between Sertag and SUNMI
If your shortlist has come down to these two, the table below puts everything recorded in the catalogue side by side. We do not declare a winner — which difference matters depends on your store's scenario, and we do not know that scenario.
Measurable differences
Screen size range
Communication
Price band
Models with NFC
Sells in Türkiye
Full comparison
| Sertag | SUNMI | |
|---|---|---|
| Models in catalogue | 2 | 2 |
| Screen size range | 2.9″ – 7.5″ | 2.13″ – 2.6″ |
| Colour capability | 3 colours | 3 colours |
| Communication | Sub-1 GHz (433/868 MHz) | Bluetooth LE 5.x |
| Battery life (years) | 5 | 5 |
| Cold-rated models | 0 / 2 | 0 / 2 |
| IP protection class | IP54 | IP54 |
| Price band | Economy, Upper | Economy |
| Mains-powered models | 0 / 2 | 0 / 2 |
| Models with NFC | 0 / 2 | 2 / 2 |
| Market position | Tier-3 · Value | Tier-2 · Specialist |
| Headquarters | Shenzhen, Çin | Şanghay, Çin |
| Founded | 2011 | 2013 |
| Management platform | Sertag ESL System | SUNMI Cloud · açık ESL OpenAPI |
| Sells in Türkiye | — | Noya Bilgisayar |
Sertag
A manufacturer specialising in sub-1 GHz communication. Thanks to the high penetration of the lower frequency, it covers a wide area with fewer access points in environments dense with metal shelving and walls. Note: the manufacturer's site was unreachable during the 2026-08 verification round; the records rest on secondary sources.
Strengths
- Wide coverage with a low access point count thanks to sub-1 GHz
- Advantageous in warehouses and industrial facilities
- Reasonable infrastructure and hardware cost
Watch-outs
- Low bandwidth - bulk updates are slow
- Limited variety in colour and large-format models
SUNMI
A Chinese manufacturer known for smart POS terminals and retail IoT hardware; its ESL line is offered under the SL series. Market reports mention it among Chinese manufacturers growing both domestically and in exports. It publishes open ESL OpenAPI documentation for developers.
Strengths
- The option of buying the POS terminal and the ESL from the same manufacturer - single-source integration
- Publicly available ESL OpenAPI documentation
- NFC-capable three-colour displays and a visual template editor
- A widespread dealer network in Europe
Watch-outs
- Per-model technical datasheets are not public
- ESL is not the company's core product line - roadmap priority sits on the POS side
- Freezer and large-format options are limited
How solid is this comparison?
18 fields are estimated across Sertag records, with 2 sources attached. For SUNMI: 14 estimated fields and 4 sources. Estimated fields are derived from class averages and are marked individually on product pages; where the two brands differ sharply in how much is estimated, the comparison is unequal by the same degree.