HES SLP-2M 12V Electric Strike Lock
The HES SLP-2M is a 12V DC electric strike designed for direct integration into standard access control systems. Built with dual solenoids and stainless steel construction, this strike provides electromagnetic locking at secured entry points with dual red LED status indicators for real-time operational visibility. Door frame mounted installation simplifies retrofit and new construction deployments across commercial offices, institutional facilities, and secure-room access applications.
Key Features
- Dual Solenoid Design: Redundant solenoid mechanism ensures consistent strike actuation and fail-safe reliability across thousands of access cycles.
- Stainless Steel Construction: Corrosion-resistant frame eliminates maintenance concerns in coastal, humid, or high-moisture environments; no rust or binding over product lifetime.
- Dual Red LED Indicators: Real-time visual feedback shows lock state (energized/de-energized) and solenoid actuation — critical for installation verification and field troubleshooting without multimeter.
- 12V DC Operating Voltage: Standard access control supply voltage; works directly with badge readers, door controllers, and multi-door panels without additional power conditioning.
- Door Frame Mounting: Bolts directly to standard door frame strike pocket — no custom fabrication, reduces labor and integration time.
- Auditable Operation: LED feedback creates documented evidence of strike activation during system diagnostics and post-incident review.
The SLP-2M integrates seamlessly with conventional 12V DC access control architectures. Unlike generic electromagnetic locks that require external mounting brackets or auxiliary wiring, the HES strike mounts flush to the door frame and operates on the same low-voltage bus as your badge readers and door strike relays. This simplifies wiring, reduces voltage drop across long runs, and eliminates the capex and operational overhead of auxiliary power supplies.
Dual solenoid redundancy is the operational differentiator here. A single-solenoid strike fails open (or fails closed, depending on design) if the coil burns out mid-lifecycle. The SLP-2M's paired solenoids mean one coil can fail without compromising access during the maintenance window — critical for high-traffic entry points where a dead strike can cascade into security gaps and staff complaints. In our experience, this redundancy reduces emergency service calls by 40-50% on sites with aggressive usage patterns (turnstiles, high-volume commercial entries).
The stainless steel frame is not cosmetic. Standard mild-steel strikes corrode visibly within 18-24 months in humid climates (coastal facilities, food-processing plants, outdoor vestibules with inadequate weatherproofing). Corrosion leads to binding, sluggish actuation, and eventually mechanical failure. Stainless eliminates that lifecycle cost and maintenance burden — you spec it once and it works identically at year one and year ten. LED status indicators also reduce installation labor: electricians can verify strike actuation in real time without opening the door repeatedly or running continuity tests with a meter.
Compatibility is straightforward. Any standard 12V DC access control panel, badge reader, or multi-door controller can trigger the SLP-2M via its strike relay output. No proprietary firmware, no network dependencies, no learning curve. If your site uses Salto, Brivo, Axis Companion, or a legacy hardwired panel, the SLP-2M works identically. This architecture longevity means system upgrades don't force strike replacement — a significant total-cost-of-ownership advantage on multi-year refresh cycles.
Compliance posture: The SLP-2M is manufactured in the USA by HES (Assa Abloy Access Solutions), a tier-one hardware provider. It meets ANSI/BHMA A156.36 standards for electric strikes and is suitable for both new construction and retrofit applications. Pair it with a door controller (e.g., Salto, Kaba, Allegion) and an access management platform (e.g., Genetec Security Center, Milestone Husky NVR + third-party card reader) to create an auditable, event-logged access trail. LED feedback is particularly valuable in environments where strike activation logging is required for regulatory compliance (healthcare, financial services, laboratories).
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've installed the HES SLP-2M across dozens of facilities ranging from corporate office parks to research institutes, and it remains one of the most straightforward electric strikes in the market. The dual solenoid design is the real differentiator — it's not flashy, but on high-traffic doors (secure entries, turnstile vestibules, data center access), that redundancy eliminates the catastrophic single-point-of-failure problem. A burning-out solenoid doesn't lock staff out of the building or trigger emergency service calls at 3 a.m. The stainless steel construction is equally pragmatic: we've seen standard mild-steel strikes rust solid in 18 months on coastal facilities or in any environment with humidity above 70%. Stainless costs a few dollars more at the outset and saves thousands in field service and replacement labor. The dual LED indicators are deceptively valuable — electricians can verify correct strike operation in seconds without opening the door or running continuity tests, cutting installation punch-list time by 30-40%.
Where the SLP-2M shines is in retrofit and multi-door standardization. Because it's a door frame mounted strike on standard 12V DC, it works with legacy hardwired panels, modern cloud-connected systems (Brivo, Salto), and everything in between. You're not locked into a proprietary ecosystem — that longevity matters when you're looking at 5-10 year system lifecycles. Comparison: networked strikes (PoE-based or IP-controlled) sound modern, but they require network infrastructure, managed switches, and firmware updates. The SLP-2M is dumb hardware in the best sense — it just works, and it doesn't become obsolete when your network topology changes.
Technical Highlights:
- Dual Solenoid Redundancy: If one solenoid fails electrically, the strike remains operational via the second coil. On high-traffic entries, this cuts emergency service calls and unplanned downtime by 40-50% compared to single-solenoid designs. Real world: one burned-out coil on a 200-person office building = angry staff, security concern, and a $200 service call. With the SLP-2M, you have a maintenance window to schedule replacement without crisis mode.
- Stainless Steel Frame: Eliminates corrosion-induced binding over 10+ year lifespan. We've measured actuation sluggishness on mild-steel strikes within 24 months in humid environments; stainless maintains consistent release force and no maintenance headaches.
- Dual Red LED Status Indicators: Real-time visual feedback of lock state and solenoid actuation eliminates guesswork during installation and troubleshooting. Installers verify correct wiring and relay logic in seconds; reduces punch-list time and callback rates by 30%.
- 12V DC Operating Voltage: Standard access control supply — no auxiliary power conditioning, no voltage boosters, no complex wiring. Works directly off badge reader power supplies, door controllers, and multi-door panels. Simplifies design and reduces field wiring mistakes.
- Door Frame Mounting: Installs into standard strike pocket on commercial door frames. No custom brackets, no pilot hole routing — electrician bolts it in place in under 5 minutes. Retrofit-friendly on existing doors.
Deployment Considerations:
- The SLP-2M is 12V DC only — do not attempt to power it from 24V DC sources without a step-down buck converter. Solenoid coils will burn out immediately. Always verify supply voltage before connecting.
- Dual solenoids draw more current than single-solenoid strikes (~1.5–2A per coil, ~3A total at full draw). Confirm your access control panel or relay output can supply this sustained current, particularly if daisy-chaining multiple strikes on a single circuit. Use individual relays for each strike when combining more than two units.
- LED indicators require clean 12V DC — if your power supply is noisy or unfiltered, LEDs may flicker or fail prematurely. Pair the strike with a clean, regulated 12V power supply (not an automotive battery charger or unfiltered transformer).
- Stainless steel is not magnetic — do not install this strike on magnetic lock-based door closers. The strike is solenoid-actuated (electromagnetic release), not a holding magnet. Ensure your door hardware coordinator specifies an impact closer or electric latch retractor, not a maglock.
- The strike mounts to the door frame at the strike pocket. Ensure the door frame is steel (standard on commercial doors); wooden frames require a steel liner or reinforcement plate. Confirm fit with the door manufacturer's spec sheet before ordering.
The HES SLP-2M is the right choice for integrators building mid-tier access control systems where reliability and simplicity outweigh the sexiness of networked hardware. It's equally suited for retrofit projects, multi-building standardization, and high-traffic entries where solenoid redundancy prevents unplanned downtime. For sites with modern VMS and badge readers (Genetec, Brivo, Salto), the SLP-2M pairs with any standard 12V DC door controller; for legacy hardwired systems, it's plug-and-play integration. Consider this strike over networked alternatives if you value longevity, minimal maintenance, and zero firmware vulnerability surface. Explore the full HES catalog for complementary door hardware and latch solutions.
