STI (SS2429EM-EN) Key-to-reset illuminated

Searching for an STI pull station cover labeled “EMERGENCY”? The SS2429EM-EN is the part that ships under that search term — though it is technically a complete Stopper Station, not a cover alone. First, an occupant lifts the clear shield. Then they turn the illuminated cap to engage the contact. As a result, the connected emergency-stop or process-control circuit responds, and an operator rotates the cap back to reset.

STI SS2429EM-EN at a glance

This station is blue, indoor-only, flush-or-surface mount with a Stopper Station Shield. Specifically, it is turn-to-reset with integrated LED illumination and an “EMERGENCY” label in English. However, the SS2429EM-EN is not UL 38 listed for fire-alarm initiating-device service.

Verified STI SS2429EM-EN specifications

• Series: STI Stopper Station SS2000 family — SS2429 base = blue, indoor only, flush or surface, with Stopper Station Shield, turn-to-reset, illuminated
• Color: Blue housing with “EMERGENCY” label in English
• Activation: Push button with integrated LED illumination (illuminates green, red, or white per LED color option)
• Reset: Turn-to-reset (operator rotates the cap to reset; no key required)
• Mounting: Flush or surface; indoor only
• Label: “EMERGENCY” in English
• Cover: Stopper Station Shield (clear polycarbonate with curved design to prevent accidental activation)
• Contacts: Two Form “C” contacts; SPST gold-plated
• Contact rating: 10 A @ 125/250 VAC, 1/2 HP, 6 A @ 30 VDC; 6 A @ 600 VAC, 1 A @ 250 VDC for the SPST gold-plated blocks
• Listing: UL Listed to U.S. and Canadian safety standards; complies with UL 2017
• Material: Polycarbonate with stainless steel backplate; 5VA flammability rating
• Operating range: Polycarbonate working properties -40° to 250°F (-40° to 121°C)
• Compliance: ADA Compliant push button
• Warranty: Three-year guarantee against polycarbonate breakage in normal use; one year on electro-mechanical and electronic components

STI pull station cover terminology note

The phrase “STI pull station cover” is a common search-engine shorthand. However, in the official STI catalog this product is a Stopper Station — a complete switch (cover plus button plus contact block) rather than a separate accessory cover. Furthermore, STI’s Stopper II and Universal Stopper polycarbonate covers (used over third-party manual pull stations) are different SKUs entirely. As a result, customers should specify “Stopper Station” when ordering the SS2429EM-EN and “Stopper II” or “Universal Stopper” when ordering a polycarbonate cover for a separate pull station.

Where SS2429EM-EN fits in the SS2429 family

The SS2429 base is the blue, indoor, illuminated platform with Stopper Station Shield. Specifically, EM = EMERGENCY label; EX = EMERGENCY EXIT. Furthermore, the LD suffix in the broader family designates a horn/strobe variant. As a result, the SS2429EM-EN is the EMERGENCY-labeled, no-horn variant.

Application context

Process equipment e-stops, lab emergency controls, and access-control egress are typical installations for the blue color code. However, the SS2429EM-EN is indoor only — for outdoor applications, specify an indoor/outdoor rated SS2000 variant. Also, this station is not a fire alarm pull station.

Need help selecting the right part or verifying compatibility? Our team supports thousands of commercial fire alarm installations every year. Call us at 1-888-557-0558 or email sales@lifesafetycom.com for application guidance, lead-time updates, or volume pricing.