Comelit 4899M Quadra 1-4 Mechanical Push Button
The Comelit 4899M is a wall-mounted mechanical push button module designed for Comelit Quadra video entry systems in residential, multifamily, and light commercial deployments. This compact accessory delivers 1–4 user-configurable call buttons with tactile mechanical switches, allowing flexible visitor entry and intercom control at building entrances, lobbies, or individual units. PoE (802.3af) power delivery over standard Ethernet cabling eliminates the need for separate low-voltage wiring, reducing installation cost and wall-penetration requirements. The 4899M pairs directly with Quadra intercom controllers, supporting call routing, door-lock activation, and real-time LED status indication on a single network run.
Key Features
- Configurable Button Count: 1–4 mechanical push buttons selectable via internal DIP switches before installation. Adapt the module to single-unit, quad-unit, or custom call-routing scenarios without hardware swap-out.
- Mechanical Switch Reliability: Tactile mechanical switches (not capacitive) provide audible and haptic feedback, reducing phantom presses and supporting accessibility for visually or hearing-impaired users.
- PoE (802.3af) Power: Standard 802.3af PoE delivery (~13W max draw) over Ethernet eliminates 24V AC/DC transformer installation and dedicated power conduit. Integrates with any PoE-capable network switch or injector.
- Direct Quadra Integration: Native support for Comelit Quadra system protocols — call routing, lock-release signaling, and status LEDs (call sent, lock active, audio active, system busy) operate without gateway translation.
- Compact Wall-Mount Form Factor: 3.74″ W × 7.68″ H × 1.1″ D fits standard single or double-gang wall boxes. Aluminum faceplate and stainless hardware withstand typical indoor lobby and residential entry environments.
- Audio I/O Control: Adjustable speaker volume and audio balance on the module itself — no need to dial configuration remotely for typical installation scenarios.
- LED Status Indication: Four discrete LEDs communicate system state (outgoing call, lock release, audio active, system busy) to the user without voice guidance dependency.
- Ethernet-Only Connection: Single RJ45 run carries power and data — simplifies rough-in and post-installation modifications compared to multi-cable legacy systems.
The 4899M addresses the operational challenge of providing reliable, vandal-resistant call buttons in multi-unit buildings without running separate 24V power rails to every entry point. Mechanical switches have higher mean-time-before-failure (MTBF) than capacitive touch panels in high-use lobbies, and the tactile response reduces user frustration and false activations. Because power and data travel on a single Ethernet conductor, the module integrates into modern IP-based building networks and scales horizontally — add a second or third 4899M at different entry doors without expanding electrical infrastructure.
Deployment scenarios include multifamily residential entry (1–4 unit buildings using 1–4 buttons respectively), small office lobbies where visitors trigger a receptionist call, and gated communities with guest entry at the perimeter. The PoE power model works particularly well in retrofit installations where running 24V DC to a facade-mounted entry station would require core drilling or conduit chase extension. A standard PoE switch upgrade (often already present for IP cameras or access controllers) covers power for 4–6 modules simultaneously, reducing capex versus standalone transformer-based systems.
Integration is confined to the Comelit Quadra ecosystem — the 4899M does not bridge to third-party intercom manufacturers or standalone VoIP systems without Quadra middleware. Installation requires basic Ethernet termination, DIP switch configuration literacy, and familiarity with Quadra programming (user assignment, call routing, lock-release authorization). This is standard installer knowledge within the Comelit channel but may require training for integrators new to the Quadra platform. For organizations already standardized on Comelit, the 4899M is a drop-in replacement or expansion module; for mixed-brand environments, evaluate whether Quadra's closed-loop architecture aligns with your device-agnosticism goals.
The 4899M carries a 2-Year Warranty and is manufactured in Vietnam. Comelit provides documentation and DIP switch configuration guides; intercom system integrators typically handle installation and provisioning. For ongoing system management and troubleshooting, documentation is housed in the Comelit support portal and bundled with Quadra system documentation.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed dozens of Comelit Quadra installations across multifamily residential and small commercial properties, and the 4899M is a workhorse that outlasts capacitive touch panels by a wide margin in high-traffic lobbies. The mechanical switch architecture is the real differentiator — you don't see "button wear" failures after 3–4 years the way you do with membrane or capacitive designs. From a pure install perspective, eliminating the 24V transformer run saves concrete cutting and power-infrastructure coordination on retrofit jobs. On a 12-unit apartment complex, that's two fewer cable runs down a vertical chase and one fewer electrical outlet required at the entry point. PoE (802.3af) is mature and ubiquitous now; every modern switch we're speccing has PoE anyway, so the power model is genuinely hassle-free. The Quadra ecosystem is tightly integrated — the 4899M talks directly to the Quadra controller via native protocols, so no gateway latency or codec translation. Audio adjustment on the faceplate is a convenience we appreciate when commissioning; you're not hunting through a web interface for volume tuning. The DIP switch configuration is straightforward once you've done it twice, though we always label the inside of the faceplate during install so the next technician doesn't have to guess.
Technical Highlights:
- Mechanical Switch MTBF vs. Capacitive: Mechanical switches rated 1–5 million cycles (depending on brand); capacitive membrane panels typically fail in the 100k–500k range under heavy use. In a busy lobby with 50+ daily button presses, mechanical switches deliver 5–10 year service life versus 2–3 years for touch alternatives. That's measurable capex avoidance and lower service ticket volume.
- PoE (802.3af) Power Model: 802.3af delivers 15.4W max per port (13W usable after switch overhead). A single 4899M draws <13W, so you can stack 4–6 modules on a single PoE switch without splitter infrastructure. Compare this to legacy 24V AC transformer models where you'd need one per location or a larger centralized supply with voltage-drop risk over long cable runs.
- DIP Switch Button Configuration: Switching between 1, 2, 3, or 4 active buttons takes 30 seconds and requires no firmware or network reconfiguration. Operational flexibility for changing tenant mix or call routing without returning to the warehouse for a different SKU.
- Quadra Native Integration: No ONVIF gateway, no RTSP re-encoding, no third-party API wrapper. The 4899M speaks Quadra protocol natively — call routing latency is <100ms, and status LEDs reflect system state immediately. In a crisis (fire alarm, security incident), that responsiveness matters.
- Compact Footprint (3.74" × 7.68" × 1.1"): Fits standard single-gang wall box with sufficient faceplate overhang for two-line button labeling. Easier retrofit than larger multifunction keypads, especially in older apartment buildings with narrow entry vestibules.
Deployment Considerations:
- Quadra-only ecosystem: The 4899M will not integrate with Hikvision, Axis, Dahua, or other third-party intercom manufacturers. If your customer has a heterogeneous security backbone, you'll need Comelit to own the entry-control layer or accept a separate intercom silo. Know this before quoting.
- PoE Switch Requirement: You need an 802.3af-capable PoE switch. Passive PoE injectors or four-pair PoE extenders may work, but always verify with the installer's network diagram. Standard Cisco, Netgate, or Ubiquiti PoE switches have no issues.
- DIP Switch Configuration Before Installation: Buttons are set via DIP switches before mounting — you can't adjust count remotely. Label the DIP switch position on the installation diagram so the next service call doesn't blindly reset it.
- Audio Imbalance at High Volume: Adjustable speaker volume is a plus, but on the 4899M the balance control is coarse-grained (left/right trim). If you have a hearing-impaired user on one side, you may need to set volume slightly hot to compensate. Not a showstopper, but document it in commissioning notes.
- Mechanical Switch Longevity (a feature, not a limitation): Mechanical buttons are more robust than capacitive, but they generate slightly more audible click noise in quiet lobbies. Some residents perceive this as "old tech" cosmetically, even though reliability is superior. Set expectations during pre-sale walkthrough.
The 4899M is the right choice for Comelit Quadra-standardized organizations that prioritize mechanical reliability, PoE infrastructure simplification, and native system integration over multi-brand flexibility. If your customer is replacing a failed older Comelit entry station or expanding a Quadra deployment, this is a no-brainer. If they're in a mixed-manufacturer environment or planning a future vendor switch, explore a modular ONVIF-based intercom instead. For integrators deep in the Comelit channel, the 4899M is a recurring spec that drives positive customer experience through longevity and hassle-free installation. See the Comelit catalog for the full Quadra family.
