This article was machine-translated from French and is being reviewed. Prices are in Algerian dinars excl. VAT.
Commax is a South‑Korean manufacturer of intercoms and video phones. The references listed here (DRC‑40K panel, CDV‑43K and CDV‑70H monitors) are dedicated‑cable equipment, no network. A kit includes a street panel (camera, microphone, speaker, button) and one or more indoor monitors. Choosing a Commax intercom depends on the number of units served (one button per unit), screen size and existing wiring. This guide shows models from the asloitech.com store and our quotes, calculates simple kits and recalls Commax wiring rules.
In short
- Street panels: the DRC‑40K, for one unit, is listed at 19,000 DA HT. Panels with 2 to 4 buttons range from 40,000 to 75,000 DA HT depending on the model (asloitech.com store, 06/11/2026, subject to availability; these four panels were out of stock on that date). Only the discreet door camera DRC‑4‑CPHD (24,000 DA HT) was in stock among Commax references.
- Monitors: 4.3 inches (CDV‑43K at 39,000 DA HT, CDV‑43Y at 29,000 DA HT) or 7 inches (CDV‑70H at 34,000 DA HT, CDV‑70H2 at 35,000 DA HT), all out of stock on 06/11/2026.
- One‑unit kit: DRC‑40K panel and CDV‑70H monitor, totaling 19,000 + 34,000 = 53,000 DA HT of equipment, excluding cable and installation.
Commax street units: the models
A multi‑button street panel serves as many units as buttons: each button calls a monitor. The store labels give 2 buttons for the DRC‑2UC‑M and 3 buttons for the DRC‑3UC. Beyond 4 buttons, the store does not list a Commax panel; pricing is done by quote.
1‑button plate (DRC-40K)
For a single unit. It is listed at 19,000 DA HT in store (06/11/2026, out of stock that date). Typical quote range: 17,000 to 19,000 DA HT, median 19,000 DA HT (11 orders). According to the manual, it connects to a monitor via 4 polarized conductors and to the latch via 2 conductors. Commax documentation pairs it with CDV‑43K and CDV‑70H monitors.
Use cases: office, pharmacy, small office, villa.
2‑button plate (DRC-2UC-M)
For two units, with one monitor per unit. Store price: 40,000 DA HT, out of stock on 06/11/2026.
Use cases: small two‑unit building, premises with two separate entities.
3‑button plate (DRC-3UC)
For three units. Store price: 44,000 DA HT, out of stock on 06/11/2026.
4‑button plate (DRC-4ML/RF1)
Four‑button door station, for four units. Store price: 75,000 DA HT, out of stock on 06/11/2026.
The plate prices do not follow the number of buttons: these plates are different models (DRC-40K, DRC-UC, DRC-4ML). Compare the datasheets (material, waterproofing, number of buttons) before comparing prices.
Discreet door camera (DRC-4-CPHD)
The online shop also lists the discreet door camera DRC-4-CPHD, at 24,000 DA HT, in stock on 06/11/2026. The product title is “camera of the door discreet”. Wiring, compatible monitors and number of serviced units are read from the manufacturer’s datasheet before choosing it.
Commax monitors: screens and functions
4.3‑inch monitor (CDV-43K, CDV-43Y)
A compact screen for a small space: small office, cabinet, apartment entrance. The CDV-43K is listed at 39,000 DA HT in the shop (out of stock on 06/11/2026). Typical price range on our quotes: from 24,000 to 39,000 DA HT, median 38,000 DA HT (4 orders). The CDV-43Y is listed at 29,000 DA HT (out of stock). Its shop designation includes “2door”: read the model manual to see if a second door can be connected.
7‑inch monitor (CDV-70H, CDV-70H2, CDV-70Y)
A larger, more readable screen, hands‑free for the CDV-70H. The CDV-70H is listed at 34,000 DA HT in the shop (out of stock). Typical price range on our quotes: from 32,000 to 34,000 DA HT, median 34,000 DA HT (8 orders). The CDV-70H2 is at 35,000 DA HT and the CDV-70Y (designation “7 inch‑2door white”) at 42,000 DA HT, both out of stock. According to Commax documentation, the CDV-70H connects one plate and the CDV-70H2 connects two.
A 4.3‑inch monitor is not necessarily cheaper than a 7‑inch: in the shop, the CDV-43K (39,000 DA HT) costs more than the CDV-70H (34,000 DA HT). Compare prices at purchase time.
Monitors with Wi‑Fi
The shop lists the CMV-70MX-H (indoor 7‑inch Wi‑Fi monitor, 45,000 DA HT) and the CDV-70QT (Wi‑Fi, 7 inches, “2door”, “memory”, 61,000 DA HT). Both are out of stock on 06/11/2026. The labels indicate Wi‑Fi (the smartphone response is verified on the manufacturer’s datasheet) and, for the CDV-70QT, memory.
Complete kits and scenarios
The equipment cost of a building is calculated as: plate price (same number of buttons as units) + number of units × monitor price. A 3‑button plate does not serve 6 units: for 6 units you need a 6‑button plate, so quote accordingly.
One‑unit kit
Two common combinations per Commax documentation: the DRC-40K plate with the CDV-43K monitor or with the CDV-70H monitor.
| Kit | Composition | Shop price, 06/11/2026 (DA HT) | Median of our quotes (DA HT) |
|---|---|---|---|
| 4.3‑inch screen | DRC-40K + CDV-43K | 19 000 + 39 000 = 58 000 | 19 000 + 38 000 = 57 000 |
| 7‑inch screen | DRC-40K + CDV-70H | 19 000 + 34 000 = 53 000 | 19 000 + 34 000 = 53 000 |
These totals exclude cable, latch and its power supply, or installation. Items were out of stock at the survey: check availability before quoting. The medians of our quotes come from different orders; they are ball‑park figures, not rates.
Small building with multiple units
Apply the formula above with the 2, 3 or 4‑button panel from the store. Before quoting, check the panel manual for compatible monitors and wiring instructions per unit. Wiring is star‑shaped: one cable per unit to the panel. Cable, lock and installation costs are on the quote.
Wired Commax architecture
For the DRC‑40K panel and CDV‑70H monitor, Commax documentation states:
- 4 polarized conductors between panel and monitor: voice, ground, +12 V and video. Follow the colors and markings on the monitor and panel;
- 2 unpolarized conductors for the lock;
- the +12 V from the panel comes from the monitor;
- a maximum distance that depends on conductor diameter:
| Conductor diameter | Approximate cross‑section | Max panel‑monitor distance |
|---|---|---|
| 0.5 mm | 0.2 mm² | 28 m |
| 0.65 mm | 0.33 mm² | 50 m |
| 0.8 mm | 0.5 mm² | 70 m |
The cross‑section is calculated from the diameter. With UTP cable (see Câble Cat6 or Cat6A for categories), Commax manuals describe a special connection of the remaining conductors (tied to ground): follow the model’s schematic rather than wiring as for a network.
Advantage: the installation works without a computer network, even in an old building. Limit: point‑to‑point wiring for each additional monitor, costly in a dense building.
Observed Commax alternatives: kits with transformer
The online shop also lists a Commax street plate delivered with a transformer (label “street plate + Transformer”), at 51,000 DA excl. VAT, out of stock as of 06/11/2026. A transformer supplied with the plate avoids buying it separately if the system requires one. The model’s manual specifies this need, the number of buttons and compatible monitors.
Commax vs Dahua IP comparison
| Criterion | Wired Commax (e.g., DRC‑40K + CDV‑70H) | Dahua IP PoE |
|---|---|---|
| Cable | 4 conductors plus 2 for the latch, point‑to‑point | One network cable per device, maximum 100 m |
| Power supply | +12 V from the plate supplied by the monitor; monitor on mains | PoE from the switch to the plate, depending on the model |
| IT network | No | Yes: switch, IP addresses |
| Smartphone | Only with Wi‑Fi models | According to the IP system |
| Recording | Image memory according to the monitor model | According to the model; integration with a network recorder possible depending on the model |
| Extension | One cable per unit to pull | One monitor and one switch port |
| Shop price, 06/11/2026 (excl. VAT) | Plate 19,000 DA and monitor 34,000 DA, out of stock | IP PoE plate 2‑button VTO3211D‑2P 26,000 DA and 7‑inch IP monitor VTH1550CH‑S2 28,000 DA, in stock |
The two families are not interchangeable: a Commax monitor does not connect to a Dahua plate, nor vice‑versa. Commax suits an old small building without a network. The Dahua IP is better when a network exists, allowing easy addition of units or connection to other network equipment. Compatibility between the Dahua plate and monitor is verified before purchase. For PoE logic and switch, see Wi‑Fi or wired PoE camera.
AsloTech installation advice
- Measure the actual distance between the plate and each monitor, then choose the conductor diameter from the table above.
- Provide a mains outlet next to each monitor: the panel depends on its +12 V, so the monitor must be powered continuously. To keep access during an outage, see UPS: how to choose power and IP telephony: what to do in case of outage; the UPS from our shop are listed on professional IT hardware.
- Check the latch: voltage, consumption and operating mode (push‑to‑open or break‑current). If the latch consumes more than the plate’s output allows (value in the manual), use a separate supply and relay. See Electromagnetic lock or latch and our solution access control and time clock.
- Separate the cables of the intercom from those of the mains and label each cable at both ends.
- Test before closing the conduits and partitions: image, voice, latch opening, for each unit. AsloTech performs these acceptance tests at commissioning.
- Read the manual of the panel in case of multiple panels or multiple monitors per unit: wiring varies by model.
Frequently asked questions
Can I record Commax calls?
It depends on the monitor. Some models have image memory (the CDV-70QT store sheet mentions “memory”), basic monitors may not. No monitor replaces a continuous video recorder. For reliable video evidence of access, use a dedicated CCTV camera (see CCTV surveillance).
Is Commax compatible with other brands?
No, in practice. A panel and a monitor connect only if they belong to the same wiring family. A Commax device is chosen with other Commax devices, and the model manual lists the intended combinations. Dahua, Videx or other systems have their own wiring.
What are the conductors of the Commax cable for?
For the DRC‑40K and CDV‑70H pair: four polarized conductors provide voice, ground, the panel’s 12 V power and video. Two unpolarized conductors command the latch. The polarity of the first four must be respected.
What budget for one unit, and for several?
For one unit, the equipment (panel and monitor) costs 53,000 DA HT with the CDV‑70H and 58,000 DA HT with the CDV‑43K at the store prices of 06/11/2026, subject to availability. For multiple units, apply the formula: panel price + number of units × monitor price, then add cable, latch and installation, which are quoted on a quote.
Explore the intercom range in store or contact us to study your building. Also see Visiophone or intercom: which to choose, IP telephone system or analog and our page IP telephony and visiophony. For installations coupled to networks, see our IT network solutions.