Honeywell PRO42IC Wired Control Module
Overview
The PRO42IC is a wired control module engineered for hardwired door access installations within the Honeywell PRO4200 intelligent security platform. It delivers centralized credential management and access logic for facilities that require persistent, hardware-backed entry control without reliance on wireless or cloud connectivity. The PRO42IC suits commercial security deployments, access control cabinets, and integrated entry-control environments where reliability and auditability matter.
Key Features
- 2-Door Access Management: Controls up to 2 independent door locks simultaneously, making it suitable for small-to-medium entrance points (lobbies, server rooms, secure corridors, or emergency exits). One module can handle both reader inputs and relay outputs for paired doors without daisy-chaining additional controllers.
- 1 MB Onboard Flash Memory: Stores credential records (cards, PINs, biometric templates) directly on the module. This means the system can operate offline if your network drops—critical for life-safety facilities where access denial creates liability. Capacity supports 500–1000+ credentials depending on record complexity.
- LED Status Indicators: Real-time visual feedback (power, lock state, alarm, access denial) eliminates guesswork during commissioning and troubleshooting. You can diagnose a wiring fault or reader failure at a glance without pulling logs.
- Backup Battery Support: Integrated battery connector and management logic ensure doors remain operable during mains failure. Typical hold-up time is 4–8 hours depending on load and battery capacity chosen—sufficient for most fire-code requirements and user egress scenarios.
- Wired Connectivity: Hardwired serial or Ethernet link to the PRO4200 backbone eliminates RF interference, eavesdropping risk, and periodic re-pairing headaches common in wireless modules. Ideal for retrofit installations in older buildings or sites with thick walls.
- PRO4200 System Integration: Works natively with Honeywell's PRO4200 platform, inheriting centralized policy management, audit logging, and integration with fire panels, cameras, and intercoms through the same control backbone.
Integration and Compatibility
The PRO42IC integrates with the PRO4200 access control platform and is designed for hardwired installation in security equipment cabinets, UPS-backed power architectures, and hybrid access-control/CCTV installations. Its wired interface supports legacy reader technologies (magnetic stripe, Wiegand proximity, HID iClass) and modern formats (13.56 MHz ISO/IEC 14443). The module consumes power from the PRO4200 power supply and can drive electromechanical relays or electronic strike controllers.
Facility integrators and IT architects should plan for dedicated UPS-backed circuits feeding the PRO42IC, especially if doors are life-safety critical. Battery hold-up time depends on actual load (relay coil current × duty cycle), so size the backup battery accordingly during design phase. Coordinate credential provisioning with your directory system (Active Directory, cloud IAM) via the PRO4200's management interface to avoid manual card-by-card entry.
When to Choose a Different Model
If you need to control more than 2 doors in a single location, consider a higher-capacity variant within the Honeywell PRO4200 family. If wireless operation is a hard requirement (e.g., remote site with no conduit), or if you demand cloud-first architecture with minimal on-premises hardware, the PRO42IC's hardwired, local-processing design may not align with your infrastructure roadmap. Similarly, if credential storage of 1 MB is insufficient for a multi-building campus (1000+ employees), plan for credential synchronization from a central directory rather than on-module storage.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The PRO42IC is a no-frills, hardwired workhorse. It sits in the sweet spot for retrofit access control in commercial buildings and secure facilities where you've already got structured cabling and UPS infrastructure. The 1 MB onboard memory and local processing are huge for sites that have experienced network outages or ISP instability—you're not dependent on cloud reachability to let people out of a conference room.
Technical Highlights:
- 2-Door Parallel Control: Each door has its own relay output, so you're not multiplexing lock commands. Both doors energize or de-energize independently—no queuing delays or race conditions.
- 1 MB Flash Memory: Equivalent to roughly 500–1000 credential slots, depending on whether you're storing simple card IDs or multi-modal records (card + PIN + biometric). In a 100-person office, that's 5–10x redundancy, which means you can take days to sync from the PRO4200 admin console without users noticing a hitched credential update.
- LED Diagnostics: No web interface, no Telnet login to check status. Three or four LEDs tell you instantly whether power is live, doors are locked, and whether a card just failed. That saves 30 minutes of troubleshooting on a Friday afternoon.
Deployment Considerations:
- UPS sizing: If you're backing up two electric strikes (each ~400mA @ 12VDC in the locked position), plan for at least 40W load on your battery. A typical 12V/7Ah UPS battery holds that for 4–6 hours. Don't guess—calculate the relay coil amp-hour draw with your security integrator.
- Credential Sync: The 1 MB memory is local. If you're issuing 50 new badges on Monday and they're stored in Active Directory, you've got to push them down to the PRO42IC via the PRO4200 backbone. Set up a nightly sync policy to avoid Friday-morning 'card not recognized' calls.
The PRO42IC makes sense for dedicated entry-control cabinets serving a single secure zone (data center, lab, vault entrance, emergency command center). Don't use it if you're trying to manage 20 doors across a distributed campus or if your organization demands zero on-premises equipment. For that, ask about the PRO4200's cloud-managed variants.
Frequently Asked Questions
Q: Does the PRO42IC work with wireless readers?
A: No. The PRO42IC itself is wired only. However, it can integrate with wireless reader gateways or repeaters that connect to the PRO4200 backbone via Ethernet or serial, provided the PRO4200 platform supports that pairing. Confirm with your Honeywell systems integrator.
Q: What happens if the network connection to the PRO4200 fails?
A: The PRO42IC can operate in local mode using credentials stored in its 1 MB flash memory. Doors will remain operable (unlock or lock according to local schedule and stored credentials), but credential updates from the central PRO4200 console will be queued until connectivity is restored. Audit logs will be buffered locally.
Q: How long does backup battery hold doors unlocked?
A: Hold-up time depends on the battery capacity you provide and the relay load (coil current and duty cycle). Typical installations with two strikes achieve 4–8 hours. Your integrator must calculate actual hold-up time during design, not assume a minimum standard.
Q: Can I expand the PRO42IC to control 4 doors later?
A: No, the PRO42IC is fixed at 2 doors. To add doors, deploy a second PRO42IC module on the same PRO4200 platform or upgrade to a higher-capacity control module in the PRO4200 family. Plan door count upfront to avoid retrofitting control hardware.
Q: Is the PRO42IC NDAA compliant or restricted for federal use?
A: No certification status is documented in available sources. Verify compliance requirements with your Honeywell representative if federal procurement or supply-chain restrictions apply.
