VIDEX - SMK-1S/A - Smart Series 1-Way Surface Audio Door Entry Kit, Aluminium

SMK-1S/A: Videx Smart Series 1-Way Surface Audio Door Entry Kit

The Videx SMK-1S/A is a one-button audio door entry kit for one entrance. In the box are a surface-mounted door panel with an anodised aluminium front, a wall-mounted 3000 Series Smart handset with a door open button, and a 12 V AC power supply that fits on a DIN rail or straight onto the wall.

A visitor presses the call button and the handset rings with an electronic call tone, adjustable on three levels. Lift the handset to talk, and press the door open button to release an electric lock (not included). The lock relay is built into the door panel, so only four wires run between the door panel and the handset, which Videx calls 3+1 wiring.

Clearance: one kit

Videx UK still lists the SMK-1S Smart Series kit on its website (checked 12 November 2026), and we have a single SMK-1S/A kit to clear. Browse everything we are clearing in CCTV Clearance, or see our intercoms and door entry range for video kits.

Clearance terms: clearance items cannot be returned for a refund if you change your mind after buying at our trade counter or on a trade account. If you are a consumer buying online, you keep your legal right to cancel within 14 days of delivery, with return postage at your cost. If the item is faulty or not as described, your legal rights are not affected. See our returns and cancellation policy.

Technical specification

Specification from Videx's SMK Smart audiokit datasheet, installation manual, catalogue and Videx UK's product page.

What you'll need

• A 12 V AC (or AC/DC) electric lock release for the door, if you want to open it from the handset. One is not included.
• Intercom cable, CW1308 or equivalent, sized for the distance as in the table above: 4 cores from the door panel to the handset, plus 2 cores from the door panel to the lock and 2 from the power supply to the door panel. Run it separately from mains cables.
• A competent electrician or security installer. Videx recommends one. The power supply connects to the mains through an all-pole circuit breaker with at least 3 mm contact separation, placed where it is easy to reach.

Frequently asked questions

Is this a surface or flush kit?

Surface. SMK-1S is the surface-mount version, with the door panel in its own surface box; the SMK-1 is the flush version.

What does the /A mean?

The aluminium finish, as Videx's catalogue codes it. Aluminium is Videx's standard finish, so Videx now lists this kit as plain SMK-1S; gold (/G) and white (/W) are the other options.

Does it come with a lock?

No. The relay in the door panel switches a 12 V AC (or AC/DC) electric lock release, which is bought separately.

Can I add another handset?

Yes. Videx allows up to 2 more audiophones on the call button, 3 in total. The kit's handset is the Art.3011; extra handsets are not included.

How long can the cable runs be?

Videx's cable table covers runs of up to 400 m using 1.5 mm² cable, from 0.35 mm² for runs up to 50 m. Every line must stay under 8 ohms.

Can I adjust the speech volume?

Yes. The door panel has volume adjusters for both directions of speech, so it can be set to avoid feedback once the front plate is fitted.

Is this a video intercom?

No, it is audio only. For a kit with a camera, see the HiLook VI-K43P IP video intercom kit or our intercoms.

Can I return it?

Clearance terms: clearance items cannot be returned for a refund if you change your mind after buying at our trade counter or on a trade account. If you are a consumer buying online, you keep your legal right to cancel within 14 days of delivery, with return postage at your cost. If the item is faulty or not as described, your legal rights are not affected. See our returns and cancellation policy.

Supplied by Zenith Security Co., with a trade counter and live showroom in Wolverhampton. We are a supplier, not an installer: we go through the product with you before you buy, and depending on your requirements and area we may be able to recommend a qualified trade installer. Call 01902 902251 or contact us; installers can open a trade account. Browse our access control range or all Videx products.