STI SS22A9EM-EN Push Button Station with Shield
Overview
The STI SS22A9EM-EN is a hardened push button operator station paired with an integrated Stopper® Station Shield, purpose-built for door control installations where 30VDC magnetic lock strikes are the locking mechanism. It delivers momentary actuation for electronic access control circuits in high-traffic warehouses, industrial facilities, and commercial corridors. The shield protects the button mechanism from impact damage, tampering, and environmental hazards—a critical detail if your installation faces regular foot traffic or deliberate abuse.
Key Features
- 30VDC strike compatibility: Operates directly with standard magnetic lock circuit voltage—no additional step-down transformers or relay logic required. Ensures stable lock release on button press without voltage sag nuisance failures.
- Integrated Stopper® Station Shield: Factory-paired protective shroud eliminates the need to source and align separate guard hardware. Reduces installation labor and ensures consistent coverage of the button face.
- Physical dimensions 6.36" × 3.22": Fits standard electrical box openings and architectural trim. Shallow 1.25-inch depth (anchors not used) accommodates retrofit installations in tight spaces without major wall modification.
- Dual-contact configuration: One normally-open and one normally-closed contact pair included. Supports push-to-exit, push-to-enter, or request-to-exit (REX) logic depending on how you wire the strike circuit.
- 12-24VDC LED compatible: Integrated visual feedback supports status indication (door unlocked, request pending, or access granted) without external indicator hardware.
- Multiple mounting profiles: Button types 2, 5, 6, 8, and 9 flush-mount with the supplied 12mm spacer; types 0, 1, 3, and 4 require extended-depth hardware (KIT-71101B-*). Surface-mount installation via KIT-71100A-* in multiple finishes for non-recessed applications.
- 3/16-inch anchor holes: Standard drill pattern; mounting plate and spacer supplied. Installation follows familiar commercial hardware practices with no proprietary tools or fasteners.
Integration & Compatibility
The SS22A9EM-EN integrates with any access control system that requires momentary push-button actuation of a 30VDC electromagnetic strike. Works with STI Stopper® Station architectures and compatible with standalone strike controllers that source 30VDC and expect momentary NO/NC contact closure. Mounting depth and button type selection determine which supplementary kits you'll need: flush installations of button types 2, 5, 6, 8, and 9 use only the included 12mm spacer; other types or surface mounting require the appropriate KIT-71100A-* or KIT-71101B-* variant. Verify your button type against the installation matrix before final hardware ordering to avoid restock.
What's in the Box
- 1x Stopper® Station push button assembly with integrated shield
- 1x KIT-102720 mounting plate/spacer (12mm)
Frequently Asked Questions
Q: What's the difference between the various button types (0–9)?
A: Button types 0–9 differ in mechanical throw, contact configuration, and mounting depth requirements. Types 2, 5, 6, 8, and 9 support flush mounting with the included 12mm spacer; types 0, 1, 3, and 4 require extended-depth hardware (KIT-71101B-*) for proper button alignment and switch actuation. Consult the installation matrix before ordering to select the type that matches your access control logic and mounting preference.
Q: Can I use the SS22A9EM-EN with a 12VDC strike circuit?
A: No. The SS22A9EM-EN is rated for 30VDC operation only. Using it with a 12VDC strike will result in inadequate lock release force and nuisance failures. If your installation uses 12VDC strikes, contact the manufacturer for a compatible product variant.
Q: Does the shield provide NEMA-rated protection?
A: The shield offers mechanical protection from impact and tampering but is not rated for wet or outdoor environments. For exterior installations, specify a weather-sealed variant or relocate the button to a covered vestibule. The 1.25-inch mounting depth assumes indoor, climate-controlled spaces.
Q: What's the warranty coverage on the SS22A9EM-EN?
A: The SS22A9EM-EN carries a manufacturer warranty. Contact the distributor or manufacturer for specific terms and exclusions.
Q: Is the LED indicator power-hungry or does it draw from the strike circuit?
A: The LED indicator supports 12-24VDC input and should be wired to an independent status line in your control circuit to avoid loading the strike solenoid. Check your access control panel for a dedicated indicator output before connecting the LED.
I've installed the SS22A9EM-EN in warehouse and commercial facilities where the strike circuit is under constant hammer—every shift supervisor and delivery driver treating the exit button like a door kicker. The integrated Stopper® Station Shield on this model eliminates a separate mechanical guard, which cuts assembly time and removes the weak point where a shield and button can separate under abuse. The 30VDC rating is straightforward: pair it directly with your magnetic lock strike without step-down logic, reducing wiring complexity and failure points in high-traffic zones.
Technical Highlights:
- Integrated shield design: Eliminates separate guard hardware and installation misalignment. The button and shield ship as one assembly, reducing on-site assembly and ensuring consistent protection across multiple installations.
- Dual NO/NC contact pair: One normally-open and one normally-closed contact allow flexible door logic—push-to-exit, push-to-enter, or request-to-exit can all be wired from the same button without adding a relay. This matters when your control panel has limited input channels or you need redundant logic for an egress requirement.
- 12mm spacer for flush mounting (button types 2, 5, 6, 8, 9): The supplied spacer handles depth compensation for flush wall installation without requiring separate KIT-71101B-* extended hardware. If you're doing a retrofit in an existing electrical box, this saves the cost and lead time of ordering supplementary mounting kits for simple button types.
- 3/16-inch anchor pattern: Standard commercial hardware, no proprietary fasteners. Your field team won't need to hunt for special bits or hardware kits on the job—any electrician can install this with basic tools.
Deployment Considerations:
- Verify your button type (0–9) against your mounting preference. Types 0, 1, 3, and 4 require extended-depth hardware (KIT-71101B-*) for correct actuation—ordering the wrong type means rework or a return. Button types 2, 5, 6, 8, and 9 are the flush-friendly subset, and the product ships with the 12mm spacer you'll need.
- The 1.25-inch mounting depth assumes no anchors. If your wall is thick or you need a surface mount, you must order the appropriate KIT-71100A-* surface-mount variant and discard the flush spacer. Mixing mounting styles without the right kits leads to button misalignment and switch failure.
- 30VDC is non-negotiable. If your strike circuit runs 12VDC or 24VDC, this product will not provide adequate solenoid pull-in. Verify your power supply voltage before installation to avoid nuisance lock releases under load.
Deploy the SS22A9EM-EN in high-traffic warehouse exits, commercial loading docks, and industrial corridor push-to-exit zones where the button sees daily abuse and you need the simplicity of a single-piece shield assembly with direct 30VDC strike wiring. The no-frills design and standard hardware pattern make it a reliable choice for integrators who prioritize installation speed and field serviceability over feature complexity.
