STI Stopper® Station Push Button with Stopper® - SS2222PO-EN

STI SS2222PO-EN Stopper Station Push Button with Shield

Overview

The STI SS2222PO-EN is a push-button actuator assembly paired with an integrated protective shield, designed for emergency door release and egress control in access control systems. Operating at 30VDC, it interfaces directly with magnetic lock strike mechanisms, making it suitable for facilities where rapid egress or controlled emergency access must be managed from a single mounted point. The shield provides physical and environmental protection for the button mechanism in high-traffic corridors and entry points, particularly where hose-down or splash conditions occur. This unit is part of the SS22xx button family and integrates with standard STI Stopper Station product lines.

Key Features

• 30VDC Operating Voltage: Matches standard magnetic lock strike voltage. Confirm 30VDC availability at the mounting location before installation — running undersized wiring or sharing power with other devices can cause intermittent strikes.
• Magnetic Lock Strike Compatibility: Operates electromagnetic door release mechanisms directly, eliminating the need for intermediate relay or power distribution modules in simple egress-control installations.
• Integrated Protective Shield: Physical shield reduces accidental contact and environmental exposure. NEMA Type 23 enclosure rating means the assembly withstands hose-down and splash conditions — suitable for loading docks, emergency exits, and washdown-prone areas, but not designed for submerged or high-pressure spray environments.
• Flexible Mounting Options: Supports surface and flush mounting depending on door frame depth. Flush-mount installation uses the standard 12mm worldwide mounting plate (KIT-102720) supplied with the button. Surface mounting requires KIT-71100A for button types 2, 5, 6, 7, 8, and 9. Extended-depth applications (button types 0, 1, 3, 4) require an additional 12mm spacer (KIT-71101B) plus the back-box assembly — verify your specific mounting depth before ordering accessories.
• Installation Hardware Included: Comes with 12mm worldwide mounting plate/spacer, installation hardware, and drill template. Requires 3/16-inch diameter pilot holes. This standardized mounting footprint simplifies retrofit installations in existing door frames.
• Part of SS22xx Family: Compatible with other models in the series (SS2200, SS2202, SS2205, SS2206, SS2208, SS2209), allowing consistent button architecture across multiple egress points in the same facility.

Integration and Compatibility

The SS2222PO-EN integrates with STI Stopper Station product lines and supports 30VDC magnetic lock strike mechanisms. Verify your specific magnetic lock voltage and strike type before installation to avoid circuit mismatch. Mounting kits KIT-102720, KIT-71100A, and KIT-71101B accommodate different button types and door frame depths — selecting the correct kit is critical for secure installation and warranty coverage. The NEMA Type 23 rating means the assembly will withstand hose-down and splash conditions but is not designed for submerged or high-pressure spray environments; if your application involves persistent water exposure or steam, consult the manufacturer for alternative enclosure ratings.

What's in the Box

• 1x Stopper Station push-button assembly
• 1x Protective shield
• 1x 12mm worldwide mounting plate/spacer (KIT-102720)
• Installation hardware and drill template

Frequently Asked Questions

Q: What is the warranty period on the STI SS2222PO-EN?

A: The SS2222PO-EN carries a 3-year manufacturer warranty covering defects in materials and workmanship under normal use.

Q: Can the SS2222PO-EN be used for both surface and flush mounting?

A: Yes, the SS2222PO-EN supports both surface and flush mounting. Flush-mount installation uses the standard 12mm mounting plate (KIT-102720) included with the button. Surface mounting requires KIT-71100A for button types 2, 5, 6, 7, 8, and 9, while extended-depth applications (button types 0, 1, 3, 4) require KIT-71101B spacer plus back-box assembly.

Q: What is the NEMA rating of the SS2222PO-EN shield?

A: The SS2222PO-EN has a NEMA Type 23 enclosure rating, which means it withstands hose-down and splash conditions. It is not designed for submerged installations or high-pressure spray environments.

Q: Does the SS2222PO-EN include mounting hardware?

A: Yes, the SS2222PO-EN includes the 12mm worldwide mounting plate (KIT-102720), installation hardware, and a drill template. Installation requires 3/16-inch diameter pilot holes drilled into the mounting surface.

Q: What voltage does the SS2222PO-EN operate at?

A: The SS2222PO-EN operates at 30VDC and is designed to interface with 30VDC magnetic lock strike mechanisms. Confirm 30VDC availability at the mounting location before installation.

Q: Is the SS2222PO-EN compatible with other STI Stopper Station models?

A: Yes, the SS2222PO-EN is part of the SS22xx button family and integrates with other models in the series, including SS2200, SS2202, SS2205, SS2206, SS2208, and SS2209, allowing consistent button architecture across multiple egress points.

James Everett

The SS2222PO-EN is a straightforward choice when you need direct push-button egress control over a single 30VDC magnetic strike. I've deployed these in loading dock emergency exits and back-room access points where redundant control or credential-based access isn't required — you just need a button that employees and emergency personnel can find and use without confusion. The integrated shield keeps the mechanism safe from accidental impacts and washdown spray, and the NEMA Type 23 rating means it handles the moisture and traffic exposure typical in commercial corridors and warehouse environments.

Technical Highlights:

• 30VDC Direct Strike Control: Operates magnetic lock mechanisms without intermediate relay — simplifies wiring and reduces single points of failure in basic egress circuits. Confirm power budget at installation; undersized wiring or shared 30VDC rails can cause strike hesitation under load.
• NEMA Type 23 Enclosure: Withstands hose-down and splash exposure. This is a real advantage in loading docks and emergency exits that see regular washdown, but understand the boundary — it's not IP67 and won't survive submersion or high-pressure direct spray. If your door faces a downspout or sits below a roof drain, plan drainage around the installation.
• Flexible Mounting with Standard Kits: The 12mm worldwide plate (KIT-102720) ships included; surface mounting (KIT-71100A) and extended-depth applications (KIT-71101B) are clearly defined. This eliminates the guesswork on retrofit installations and reduces call-backs due to wrong hardware selection.

Deployment Considerations:

• Verify 30VDC availability and circuit capacity at the door location before installation. If you're retrofitting into an existing access control cabinet, check that the 30VDC rail has adequate headroom — adding multiple strikes or solenoids to an undersized supply will degrade button response across all devices on that rail.
• The shield is effective against casual contact but is not a hardened anti-tailgate solution. If you need accountability, audit trails, or multi-credential access, this button alone is not sufficient — you'll need to pair it with a controller and reader system.

The SS2222PO-EN is the right fit for emergency egress installations and simple release-on-demand scenarios in warehouses, loading facilities, and back-of-house corridors where a robust, weatherproof button is all you need. Pair it with proper 30VDC power planning and standard mounting hardware, and you'll have reliable egress control for years.