Choose a call-button outdoor station when one entrance serves one household or a short, fixed list of residents; a keypad station when visitors or residents need to enter a number or PIN; and a touchscreen directory station when a shared entrance needs a searchable resident list, several credentials and on-screen guidance. The decision is driven by unit count, call routing, exposure, maintenance and accessibility, not by appearance or unit price. This guide is for distributors, integrators and property teams specifying an ODM or OEM door station in writing.
Three outdoor station types compared
“Mechanical button” and “touchscreen” describe how a visitor interacts with the panel. In practice there are three layouts, and many panels combine elements, for example a keypad with a separate call button.
| Station type | Typical fit | How a visitor calls | Credentials usually offered | Maintenance points |
|---|---|---|---|---|
| Call-button station | Villa gate, single home, one door per household | Press one button (or one per household on a small multi-button panel) | Card reader, app unlock from the indoor monitor | Button wear and sealing around moving parts; label replacement when residents change |
| Keypad station | Private entry or small building where a code or room number is entered | Enter a number, then call | PIN code, card reader | Key legibility after wear; code administration and changes |
| Touchscreen directory station | Shared entrance, multi-unit building, commercial lobby | Search or scroll a directory, or enter a number on screen | Several, such as face, PIN, card or QR code, depending on the model | Screen readability in sun, cleaning, firmware and directory administration |
Choose by project size and call flow
Start with how a visitor finds the right resident, then choose the panel that makes that step simple. Use the same scenario when comparing quotations.
| Project | Usual starting point | Check before ordering |
|---|---|---|
| Villa gate or single home | Call-button station | Gate distance and cable route, lock type, indoor monitor or app answering |
| Small building with a fixed resident list | Multi-button or keypad station | How names or numbers are labelled, who updates them when residents change |
| Mid-size shared entrance | Keypad or touchscreen directory station | Directory size, credential mix, administration owner, network or bus route |
| Large or multi-entrance building | Touchscreen directory station on an IP route | Call routing between entrances, directory segmentation, server and support ownership |
Capacity is model-specific: confirm the directory and system limits for the selected model and route in writing rather than assuming them from a building category. For multi-unit planning see multi-tenant video intercom, and for villa projects see villa video intercom systems.
Exposure, durability and maintenance
Both layouts can work outdoors; they fail in different ways. Write the site conditions into the specification and ask for evidence for the selected model.
Sun, rain and temperature
A touchscreen has to stay readable in direct sun and respond in cold or wet conditions; check the mounting orientation, hood or canopy and the model’s working temperature range. A button panel has fewer readability issues but has moving parts and gaps that must stay sealed. For any outdoor station, confirm the ingress protection (IP) rating in the model datasheet.
Gloves, cleaning and wear
Capacitive touchscreens and touch keypads may not respond to thick gloves, which matters in cold climates and on sites where staff wear work gloves. Mechanical buttons tolerate gloves but wear with use, and printed legends fade. Agree a cleaning method that does not damage coatings.
Vandal and impact risk
Impact resistance is rated separately from water and dust protection. The IK scale in IEC 62262 runs from IK01 to IK10; for example IK07 corresponds to 2 joules of impact energy and IK08 to 5 joules. If the site needs an impact rating, ask for the test report for the exact model; do not assume one from the housing material.
Usability and accessibility
- Feedback: visitors should know a call is ringing. Check audible tones, a light or on-screen status, and how the panel shows that the door has opened.
- Tactile cues: raised or clearly separated buttons help visitors with low vision; a touchscreen needs high-contrast text and a simple first screen.
- Mounting height and reach: follow the accessibility rules that apply at the destination and check the camera angle at that height.
- Language and wording: touchscreen panels can show instructions and several languages; confirm the languages and the directory display format before firmware is frozen.
- Fallback: define how residents and services enter if the screen, network or power fails.
Examples from current datasheets
The values below are taken from the current Trudian datasheets for three representative outdoor stations. None of these datasheets lists an IK rating.
| Item | TD-D4BR85M kit | TD-D80AR34W kit | TD-D801 |
|---|---|---|---|
| Visitor interaction | Call button | Touch keypad plus call button | 8-inch capacitive touch screen (800 × 1280) |
| Unlocking at the panel | 13.56 MHz IC card | Password keypad, 13.56 MHz IC card | Facial recognition, password, card, QR code |
| Camera | 2 million pixels / 1080P, 110° horizontal, IR-CUT | 2 million pixels / 1080P, 110° horizontal, IR-CUT | 2 million pixels |
| Ingress protection | IP65 | IP65 | IP65 |
| Working temperature | −20°C to 70°C | −20°C to 70°C | −40°C to 70°C |
| Connection / power | 2-wire, no polarity | 2-wire, no polarity | TCP/IP; DC 12V |
| Outdoor station size | 146 × 75 × 37 mm | 146 × 75 × 37 mm | 258 × 135 × 22.5 mm |
Model pages: TD-D4BR85M, TD-D80AR34W and TD-D801. Confirm the configuration and documents for the shipping revision before quotation.
What ODM/OEM can change and what must be validated
ODM and OEM programmes can adapt a door station, but every change needs an input, an acceptance test and an owner. What is possible depends on the model and project scope; see OEM and ODM manufacturing for the programme routes.
| Request | What to provide | How it is validated |
|---|---|---|
| Button count or layout | Households per entrance, label format | Drawing review and an approved sample |
| Panel finish, colour or logo | Artwork and finish reference | Artwork approval and finish sample |
| Touchscreen interface, language or branding | Screen flow, languages, directory format | Firmware build reviewed on the sample |
| Credential mix | Card type, PIN rules, any biometric or QR requirement | Reader and enrolment test on the sample |
| Connection route | 2-wire, IP or third-party system to connect | Interoperability test with the named equipment |
| Ratings and certification | Destination market and required marks or ratings | Test reports for the exact model and revision |
Keep the approved sample, firmware build and drawings together. A change to the panel layout, reader or firmware should reopen the affected test rather than changing the approved scope silently. The OEM vs ODM programme guide explains the same workstream approach for locks.
Sample acceptance checklist
| Test | Pass when |
|---|---|
| Visitor call | The call reaches the named indoor monitor or app with audio and video. |
| Button or touch response | Every button or screen action responds, including with gloves if the site requires it. |
| Credentials | Each agreed credential opens the door; a rejected credential is refused and logged where supported. |
| Door release | The lock type and release timing work as specified, including the exit button. |
| Readability | Labels or screen are readable at the mounting position and in daylight. |
| Night operation | The visitor’s face is identifiable at night at the intended distance. |
| Recovery | After a power or network interruption the panel returns to service and the call route works. |
| Administration | The named owner can update labels, codes or the directory without supplier help. |
For the wider cost view of these decisions see Video Intercom Total Cost of Ownership, and for field-scope checks see reducing installation cost.
Frequently asked questions
Is a mechanical button or a touchscreen outdoor station better?
Neither is better in general. A call-button station suits one household or a short fixed list; a keypad suits code or number entry; a touchscreen directory suits shared entrances with many or changing residents. Choose by unit count, call flow, exposure and accessibility.
Do touchscreen door stations work outdoors?
They can, when the model is rated for the site. Check the IP rating and working temperature in the datasheet, readability in direct sun, response in cold or wet conditions and whether the site needs glove operation.
What is the difference between IP and IK ratings?
IP (IEC 60529) describes protection against dust and water. IK (IEC 62262) describes resistance to mechanical impact, from IK01 to IK10; IK07 is 2 joules and IK08 is 5 joules. Ask for the test report for the exact model.
Can the number of call buttons be customised in an ODM project?
It may be, depending on the model and scope. Provide the households per entrance and label format, then approve a drawing and a sample before production.
Which credentials can an outdoor station offer?
It depends on the model. In current Trudian datasheets, the TD-D4BR85M lists IC card unlocking, the TD-D80AR34W lists password keypad and IC card, and the TD-D801 lists facial recognition, password, card and QR code.
What should be tested on a door station sample?
The visitor call, button or touch response, each credential, door release, readability at the mounting position, night image, recovery after a power or network interruption and directory or code administration.
Specify the door station for your project
Share the entrance count, households per entrance, site exposure and credential requirements to receive a model recommendation and a written scope.
Request a project reviewEditorial review: Published 26 October 2026. Model values are taken from the current datasheets.