Introduction to the product and its key features
CDVI VHLR Universal Relay (ITM002671 VHLR)is a compact, general-purpose relay module designed primarily for access-control and light switching applications. It accepts a universal input of 12–24 V AC or DC and provides two changeover contacts (COM / NO / NC), each rated for 5 A. Small, lightweight and IP44 splash-protected, the VHLR is ideal for use inside control panels, as an installer van spare or anywhere a reliable secondary switching device is needed.
- Universal input:12–24 V AC or DC for flexible compatibility with common access control supplies.
- Double pole switching:Two changeover contacts (2 × COM/NO/NC) for independent or combined switching operations.
- Practical contact rating:5 A, suitable for electric strikes, maglocks (through appropriate power handling), sensors and small loads.
- Compact footprint:Approximately 60 × 60 × 26 mm and ~0.04 kg, easy to fit into enclosures or modular setups.
- IP44 protection:Splash-protected, suitable for indoor locations and protected outdoor enclosures.
Detailed description of specifications and benefits
- Coil voltage:12–24 V AC/DC. The universal coil simplifies inventory and reduces the need for multiple coil-voltage parts.
- Contacts:2 × changeover (COM / NO / NC). Changeover contacts allow you to wire for normally open or normally closed behavior without additional relays.
- Contact rating:5 A (up to 250 V AC / 30 V DC). This rating covers most common access-control loads and small automation tasks.
- Dimensions:60 × 60 × 26 mm (H × W × D). The compact form factor fits into tight panels and modular installations.
- Weight:~0.04 kg, negligible for transport and mounting.
- IP rating:IP44 — protected against solid objects greater than 1 mm and splashing water. Suitable for indoor installations and protected outdoor locations.
- Manufacturer:CDVI.
- Model / MPN:VHLR (Ref: E0900000213), supplier SKU ITM002671 VHLR.
- Datasheet & installation manual:Datasheet: https://workdrive.zohopublic.eu/external/815270059db756255a5b9081691dd67da26a8620e7d1d8fb7d9eafe69e21e221 . Installation manual: https://workdrive.zohopublic.eu/external/104f97471697dbd557b05d1957faf80f62407711dc6dcc47e006ec320c92e225 . Always follow the manufacturer wiring diagrams and safety guidance.
- Versatility:The universal coil (12–24 V AC/DC) removes the need to stock multiple coil-voltage variants, reducing inventory complexity for installers and resellers.
- Two changeover contacts:Double-pole switching enables separation of circuits (e.g., switching both power and a signal) or redundant switching for safety and control logic.
- Compact and lightweight:Fits conveniently inside access control panels or enclosures, and is an unobtrusive addition to retrofit jobs.
- IP44 protection:Protects the unit from incidental splashes, making it practical for many indoor and semi-protected outdoor applications.
- Cost-effective:With a suggested price of approximately 26.99 (check local pricing and VAT), it offers a practical balance of capability and affordability for installers.
Use cases and scenarios where the product excels
The CDVI VHLR is optimized for access-control and light industrial switching tasks. Here are common scenarios where it shines:
- Access control interfaces:Use the VHLR to interface card readers, exit buttons, or control panels to electric locks, allowing clean isolation between control electronics and lock power circuits.
- Lock switching:Switch strikes, solenoid locks or auxiliary circuits. The changeover contacts let you wire for fail-safe or fail-secure arrangements depending on the lock and power configuration.
- Sensor and alarm integration:Route sensor outputs or alarm signals through the relay to trigger other devices or log events without directly loading the sensor output.
- Field service and van spare:Its universal input and compact size make it an ideal spare part for installers. Carrying a handful of VHLRs in a van can solve a wide range of on-site switching problems.
- Small automation tasks:Control lighting circuits, auxiliary relays, or small actuators where 5 A switching is sufficient.
Because the VHLR accepts both AC and DC control voltages, it integrates smoothly into systems that might use different supply conventions, a frequent reality on mixed-site configurations and retrofits.
Comparisons with similar products in the market
When choosing a relay for access-control and small switching tasks, installers typically weigh three main factors: coil compatibility, contact configuration/rating and physical form factor. Here is how the CDVI VHLR stacks up against typical alternatives.
Many relays on the market are specified for a single coil voltage (e.g., 12 V DC or 24 V AC). The VHLRs 120 V AC/DC universal coil removes the need to match coil voltage, lowering the chance of installing the wrong unit and reducing inventory needs. For operations that already standardize on a single coil voltage, single-voltage relays may be marginally cheaper, but the convenience of a universal coil often outweighs the small price difference for service fleets.
SSRs offer silent operation and long life but typically have higher on-resistance and cost, and they are often optimized for AC or DC switching separately. The VHLRs mechanical contacts are more appropriate where simple contact separation, low leakage and clear open/closed switching are required (for example, switching small AC loads or interfacing legacy systems). For purely electronic switching or very high switching frequencies, SSRs may be the better choice.
DIN-rail relay modules often provide multiple channels, integrated surge protection and easy panel mounting. The VHLR is smaller and more suited to compact enclosures or point-of-use installations; it is also typically more affordable per channel if you only need one or two relays rather than a multi-module DIN assembly.
Brands like Finder, Omron and TE/Schrack produce a wide range of relays with varied coil voltages, contact ratings and form factors. Compared to many general-purpose relays from these manufacturers, the CDVI VHLR competes strongly on access-control-oriented features (double changeover contacts, universal coil, compact size and IP44). Buyers should compare specific contact ratings and enclosure requirements—some alternatives may offer higher current ratings or different mounting options if those are required.
Customer testimonials or reviews
Official public reviews specific to this exact SKU may be limited. Below are representative comments based on typical feedback from installers and integrators who use universal, compact relays like the CDVI VHLR. These are aggregated impressions rather than verbatim customer quotes:
- "Compact and reliable — perfect as a van spare. The universal coil meant I didnt need to guess the site supply."
- "Easy to wire and mounts neatly in small enclosures. IP44 has been enough for indoor access panels so far."
- "Ratings are clear and it handles common door strikes and sensors without complaints. Good value for the price."
If you plan to publish customer reviews on a store or catalog page, consider inviting feedback from installers who have used the part in real projects to gather verified testimonials.
Conclusion: why the CDVI VHLR is a great choice
The CDVI VHLR universal relay combines practical features that matter to installers and system integrators: a 120 V AC/DC universal coil, two changeover contacts, a sensible 5 A contact rating and a compact, splash-protected form factor. It fills a common niche in access control and small automation jobs by offering a simple, reliable switching solution that reduces inventory complexity and suits retrofit and field-service situations.
For anyone specifying or maintaining access-control systems, the VHLR offers an attractive blend of versatility, price and convenience. Its suggested price (around 26.99) places it in the affordable segment of the market while providing features that reduce installation time and mistakes. Always consult the manufacturer datasheet and installation manual for wiring and compliance requirements, and ensure that installation is performed by a qualified electrician or installer following local regulations. Warranty terms may vary by region and reseller, so confirm warranty coverage with CDVI or your distributor before purchase.
Overall, if you need a small, dependable relay with universal coil compatibility and double-pole switching for access control or light automation tasks, the CDVI VHLR is a practical, cost-effective choice.
