Lifesafety Power E4M-BOXED Modular Access Control Enclosure
The E4M-BOXED is a UL294-listed multi-purpose enclosure engineered to integrate Lifesafety Power FlexPower power management boards with Mercury Security access control hardware in a single, compact assembly. Purpose-built for integrators and architects who need reliable power distribution and battery backup alongside access hardware — without custom fabrication or oversized panel footprints.
Key Features
- UL294 Listing: Meets security industry standards for listed equipment housing, reducing compliance review cycles during system handoff and inspection.
- Removable Backplate Design: Backplate separates from the main enclosure, allowing you to mount and wire access hardware in the shop before transport to the job site. This parallel workflow cuts installation time compared to field-assembly-only designs.
- Pre-Engineered Mounting Patterns: Access hardware mounts on threaded standoffs that are pre-positioned; no custom drilling or guessing where to place mounting holes. Saves hours on large multi-door deployments.
- Pre-Wired Power & Distribution: Power and distribution boards arrive mounted and pre-connected inside the enclosure. You thread field wiring to the enclosure and connect — not starting from bare terminals.
- Battery Accommodation: 6.5-inch enclosure depth provides space for battery backup modules alongside power boards, eliminating the need for a separate external battery cabinet in many deployments.
- Mechanical Durability: 16-gauge steel construction with textured black finish resists corrosion and fingerprints. Removable door features quick-disconnect grounding strap for safe field service without tools.
- Tamper & Access Control: Lockset and tamper switch provided. Enclosure remains secure during installation and operation, protecting valuable access boards and power supplies from unauthorized access.
- Flexible Board Combinations: Designed to house FlexPower access control boards in a variety of configurations — single or dual boards, depending on door count and power requirements for your specific Mercury Security deployment.
Integration & Deployment Context
The E4M-BOXED fits naturally into medium-to-large access control projects where you need centralized power distribution, backup power, and hardware in one locked enclosure. Common scenarios include warehouse loading docks (where power reliability matters for badge readers and electronic locks), multi-tenant office buildings (where one enclosure can back up 4–12 doors), and retrofit installations where wall space is constrained.
Because the backplate is removable, you can pre-configure and test the entire access subsystem on the bench, then install the pre-wired enclosure on-site in a fraction of the time. For integrators managing multiple concurrent projects, this cuts field labor and reduces rework from wiring errors.
Work with your system architect to confirm board compatibility with your chosen FlexPower variant (E4M, E4M1, E4M2, or E4M3) and your target door count and backup duration. The Lifesafety Power product family documentation will specify max load per board.
Frequently Asked Questions
Q: Does the E4M-BOXED support battery backup?
A: Yes. The 6.5-inch enclosure depth is designed to accommodate battery modules. The specific backup duration depends on your board configuration, door count, and strike type; consult the FlexPower board datasheet for runtime tables under your load.
Q: Can I mount this in a wet or outdoor environment?
A: The E4M-BOXED is an indoor-rated steel enclosure. For outdoor or wet locations, you'll need to house it inside a weather-rated NEMA 4X cabinet or similar. The textured black finish provides corrosion resistance indoors.
Q: What Mercury Security access hardware is compatible?
A: The E4M-BOXED is engineered for Mercury Security readers, door controllers, and related hardware. Confirm your specific reader model and controller type are compatible with the FlexPower variant you choose (E4M, E4M1, E4M2, E4M3) by consulting the system integration guide.
Q: Can I pre-configure the entire enclosure before shipping to the job site?
A: Yes. That's the design intent. Assemble and test the backplate with all access hardware at your bench, then install the pre-wired power enclosure on-site. Field wiring connects to the already-mounted boards.
Q: Is the tamper switch monitored by the access control system?
A: The tamper switch is provided; system integration determines whether it's wired into your Mercury Security controller or a separate alarm circuit. Confirm supervision requirements with your access control design.
Q: What size door mounting area does the E4M-BOXED require?
A: Refer to the product dimension drawing (available from your integrator or distributor). Standard panel heights and widths are specified for the enclosure; mount placement follows your door layout and access hardware count.
The E4M-BOXED (often searched as E4M BOXED) solves a real problem: access control integrators juggling separate power supplies, battery backup, and access hardware cabinets on already-tight job sites. The removable backplate is the key innovation here. Most UL294 enclosures ship as locked monoliths; you're stuck wiring everything on site under pressure. The E4M-BOXED lets you assemble, test, and sign off the entire access subsystem on the bench before the truck leaves your shop. That's a measurable reduction in field rework and site callbacks.
Technical Highlights:
- 6.5-inch Enclosure Depth: Tight enough for wall mounting in standard panel cavities, deep enough to host battery modules without external battery cabinets — a real space saver on retrofit jobs where the customer doesn't want a separate rack.
- Pre-Wired Power Distribution: Boards arrive mounted and connected inside; you thread field power and reader circuits to the enclosure, not hand-assembling everything from zero. Cuts assembly time by roughly 40% on multi-door systems.
- 16-Gauge Steel with Quick-Disconnect Door: Heavy enough to resist cabinet flex and racking; quick-disconnect grounding strap means no fumbling with bolts during emergency access or maintenance.
- UL294 Listing: Eliminates back-and-forth with code inspectors or your client's security consultant on whether the enclosure meets commercial standards — it's listed, paperwork is done.
Deployment Considerations:
- Bench Testing is Non-Negotiable: The removable backplate design assumes you have lab bench space and time to verify reader wiring and Mercury Security board settings before shipment. If your workflow is purely on-site assembly, this enclosure doesn't save you labor.
- Indoor Rating Only: The textured black finish and steel construction suit temperature-controlled spaces (office, warehouse back room, server closet). If your access point is exposed to weather, mount the enclosure inside a NEMA 4X weatherproof cabinet — adds cost and complexity.
- Board Variant Verification: Confirm whether your Mercury Security design calls for E4M, E4M1, E4M2, or E4M3 boards before ordering. The enclosure is designed for all four, but wrong board selection kills the deployment before installation even starts.
Deploy the E4M-BOXED on warehouse-scale access control projects where you're backing up 8–12 doors from a central point and have the bench resources to pre-stage the system. Smaller single-door retrofit installs or sites without lab space will spend more time troubleshooting in the field than they save on the bench — choose a simpler wall-mounted power supply in those cases instead.
