Introduction to the CDVI DBB-22-04 and its key features
The CDVI DBB-22-04 Green Dome RTE & Resettable Emergency Release is a compact, purpose-built exit device designed for reliable egress control and emergency release in internal environments. Combining a large green dome Request‑to‑Exit (RTE) push button with a resettable double‑pole emergency release switch, this single‑face unit delivers a tidy, robust solution for care homes, schools, commercial buildings and other public facilities where clear, fast egress and controlled emergency override are essential.
Key features at a glance:
- Integrated green dome RTE:highly visible, high‑impact dome for intuitive operation.
- Resettable double‑pole emergency release:emergency release that latches until reset by supplied key.
- Stainless steel construction:stainless steel faceplate with durable polycarbonate dome for longevity and hygienic finish.
- Surface mount installation:supplied with a UK double‑gang back‑box for neat, quick fitting.
- Single‑face solution:combines egress and emergency release on one plate, reducing wall clutter and simplifying use.
Product specifications and detailed benefits
The DBB‑22‑04 is engineered for practical performance and straightforward installation. The manufacturer lists the unit dimensions as 98 × 188 × 57 mm and an approximate weight of 0.46 kg, making it compact enough for most nearby doorways yet large enough for clear visual recognition. It ships with reset keys and a UK double‑gang back‑box for easy surface mounting.
Key specifications:
- Manufacturer / Model:CDVI DBB‑22‑04 (Ref E0901D000020).
- Finish & materials:stainless steel faceplate; polycarbonate dome.
- Mounting:surface mount; supplied double‑gang (UK) back‑box.
- Switches:momentary RTE push button combined with a resettable double‑pole emergency switch (reset key supplied).
- Dimensions & weight:98 × 188 × 57 mm; approx. 0.46 kg.
- Certifications:resellers reference CE and RoHS; consult the CDVI datasheet for full EN/UL/IP details.
- Warranty & stock:warranty terms vary by distributor (commonly 2–5 years); current stock often limited—confirm availability for larger orders.
Benefits explained:
- Clarity and accessibility:the large green dome is immediately recognisable as an exit control in low‑stress and emergency situations, aiding accessibility for users with limited dexterity or vision.
- Space and cost efficiency:combining RTE and emergency release into one single‑face device reduces the need for multiple wall plates, simplifying wiring and lowering installation time and labour costs.
- Durability and hygiene:stainless steel finish resists corrosion and is easy to clean — an important factor in healthcare and food service environments.
- Controlled emergency override:the double‑pole resettable switch provides positive, verifiable isolation in an emergency and requires a key to reset, helping to prevent accidental reactivation.
- Neat surface mounting:the supplied double‑gang back‑box ensures a tidy installation on surface walls without the need for extensive chasing or flush mounting work.
Use cases and scenarios where the DBB-22-04 excels
The DBB‑22‑04 is particularly well suited to environments that demand both routine controlled egress and a reliable emergency release mechanism. Typical use cases include:
- Care homes and assisted living:residents and staff benefit from the large green dome for easy, low‑effort egress; the resettable emergency release gives staff controlled access in emergencies while preventing accidental or unauthorised resets.
- Schools and universities:simple, visible controls reduce confusion during drills or evacuations. The sturdy stainless finish withstands heavy, repeated use.
- Commercial and retail premises:back‑of‑house doors, staff exits, and storeroom doors that require both request‑to‑exit signalling and an emergency cut‑out.
- Healthcare facilities:wards, treatment rooms and corridors where hygiene and rapid egress are critical, with clear visual indicators for staff and patients.
- Office buildings and public spaces:reception areas and controlled corridors where a tidy, single‑face solution is preferred for aesthetics and function.
Because it is a surface‑mount device with a supplied back‑box, the DBB‑22‑04 is also advantageous for retrofits where chasing walls for flush mount installation would be costly or disruptive.
Comparisons with similar products on the market
When evaluating exit devices and emergency release solutions, buyers typically consider separate RTE buttons and emergency switches versus integrated units like the DBB‑22‑04. Here’s how the DBB‑22‑04 compares in practical terms:
- Integrated vs separate components:separate RTE and emergency switches offer flexibility in placement and redundancy, but increase cabling, wall clutter and installation time. The DBB‑22‑04’s single‑face approach minimises those issues and presents a clearer user interface.
- Resettable double‑pole vs single‑pole emergency release:a double‑pole switch isolates both supply conductors where required, providing a safer and more complete circuit interruption in emergencies. Single‑pole releases may be adequate in some systems but can leave parts of a circuit live.
- Stainless steel vs plastic faceplates:stainless steel is more durable, easier to sanitize and visually consistent with many commercial interiors. Some lower‑cost alternatives use plastic plates that can scratch or discolor over time.
- Surface mount vs flush mount:flush mount units offer a cleaner look but require more invasive installation. Surface‑mount units with a supplied back‑box (like the DBB‑22‑04) are faster and cheaper to fit, especially for retrofits.
- Visibility and ergonomics:the large green dome improves usability compared with smaller or recessed buttons, particularly for users with limited reach or dexterity.
For projects that prioritise a low profile and custom aesthetics, a flush-mounted or fully integrated wall station may still be preferred. However, for many facilities managers the DBB‑22‑04 provides an optimal balance of visibility, durability and installation economy.
Customer feedback and reviews
At present, there are limited public consumer reviews specifically for the CDVI DBB‑22‑04. Resellers typically list CE and RoHS compliance and note that the device is supplied with reset keys and a double‑gang back‑box, with warranty terms varying by distributor. When direct customer feedback is available, common themes from installers and facility managers tend to be:
- "Easy to install — the double‑gang back‑box saved us time on site and kept the finish neat."
- "The green dome is a good size and very clear for residents during drills and day‑to‑day use."
- "We appreciate the reset key arrangement — it provides accountability for emergency resets."
Note: the quotes above are representative of typical installer feedback and not verbatim sourced reviews. For verified testimonials, request references from your reseller or ask for customer case studies from CDVI where available.
Installation, compliance and practical considerations
Before selecting this device, confirm compatibility with your access control wiring and safety requirements. The manufacturer lists some certifications via reseller references (CE / RoHS), but important details such as operating voltage, full EN/UL classifications and IP rating are listed as "insufficient data" in reseller summaries — consult the CDVI datasheet and your local regulations. Installation should comply with local fire and building regulations and be carried out by qualified personnel when required.
Other practical notes:
- Keep reset keys accessible only to authorised staff to prevent accidental or malicious reset of the emergency release.
- Confirm warranty length with the distributor before purchase; common reseller warranties vary between 2–5 years.
- Verify stock levels for larger orders; typical stock can be limited (example: small quantities on hand), so plan lead times accordingly.
Conclusion — why the CDVI DBB-22-04 is a strong choice
The CDVI DBB‑22‑04 Green Dome RTE & Resettable Emergency Release offers a practical, well‑considered option for facilities that need a highly visible request‑to‑exit control together with a secure, resettable emergency release in a single, durable package. Its stainless steel faceplate, large polycarbonate green dome and supplied double‑gang back‑box make it suitable for demanding internal environments where cleanliness, ease of use and quick installation matter.
For projects prioritising a tidy single‑face solution, controlled emergency override and clear user interface — such as care homes, schools, healthcare facilities and many commercial sites — the DBB‑22‑04 strikes an attractive balance of functionality, durability and cost efficiency. To ensure safe and compliant installation, confirm the detailed technical and certification data with the CDVI datasheet and engage qualified installers as required.
Suggested retail guidance: reseller listings commonly price this unit in the modest bracket for access control hardware (example suggested price: 69.99). For precise technical, warranty and stock information, contact your CDVI distributor or consult the official datasheet (Ref E0901D000020).
