STI NT-SS101-EN Contactless Stainless Steel Exit Switch
The STI NT-SS101-EN is a touch-free exit switch designed for healthcare, transit, and high-traffic commercial facilities where contact-free egress reduces pathogen transmission and operational wear. Using infrared motion detection, it activates electronic strikes and magnetic locks without physical contact — the user simply waves their hand near the faceplate. Constructed from medical-grade 304 stainless steel with an IP65 rating, it operates on 12VDC or 24VDC and mounts directly into a standard single-gang US electrical box, integrating seamlessly into existing access control wiring. This switch is built for environments where durability, hygiene, and rapid throughput matter equally.
Key Features
- NoTouch Infrared Activation: Contactless motion detection (1.5–6 inch detection range) eliminates physical contact and reduces maintenance wear on traditional pushbutton switches.
- Medical-Grade Stainless Steel: 304 stainless construction with polycarbonate sensor window; IP65 rated for washdown environments, moisture, and dust ingress without compromise.
- Form C Dry Contact Relay: 0.5A @ 120VAC, 1A @ 24VDC output; compatible with any electronic strike, magnetic lock, or door controller accepting dry contact closure.
- Single-Gang US Form Factor: Mounts in standard electrical box; oversized faceplate covers existing installation marks for retrofit applications without drywall patching.
- Adjustable Relay Latch (0.5–20 seconds): On-board potentiometer sets unlock duration; field-tunable to match local fire codes and egress-time requirements without circuit changes.
- Low Power Draw: 45 mA @ 12VDC typical (35 mA slim variant); minimal impact on auxiliary PoE or Class 2 power budgets in multi-device installations.
- High Mechanical Life: Relay rated for 1,000,000 cycles; IR sensor rated 100,000 operating hours — typical 8-year lifespan in hospital/transit environments.
- Wide Operating Temperature: −10°C to +70°C (14°F to 158°F) range supports both climate-controlled facilities and unheated lobbies or loading docks.
The NT-SS101-EN replaces traditional pushbutton exit switches in environments where hands-free operation is mandated or preferred. Hospitals and medical clinics use it at patient-care thresholds to reduce cross-contamination; transit stations and airports specify it for high-volume egress; senior-living facilities install it where mobility-impaired residents benefit from automatic activation. Unlike electronic push-to-exit buttons, the infrared sensor requires no annual testing or contact replacement — a significant operational advantage in facilities managing dozens or hundreds of exit points.
Integration is straightforward: the Form C relay output connects to any standard access control strike driver, electric lock, or integrated door controller. Multi-gang installations run multiple NT-SS101 units in parallel on the same control circuit; a single 12VDC or 24VDC auxiliary power supply (typically integrated into the access panel) powers all units. ONVIF-adjacent access control platforms (Genetec Security Center, Milestone XProtect, Avigilon Control Center, Salto, Comet) all support dry contact relay inputs natively — no custom integration needed. On-site potentiometer adjustment requires no software reconfiguration; facilities can tune unlock delay without touching the access panel.
Durability and washdown capability distinguish this switch from consumer-grade motion sensors. The IP65 rating and 304 stainless enclosure withstand humid climates, periodic disinfection spray, and accidental water splashes — common in healthcare cleaning protocols. The relay itself is sealed against contact corrosion, eliminating the intermittent failure modes typical of exposed switch contacts in wet environments. Total cost of ownership favors the NT-SS101 over traditional buttons in high-traffic settings: one contactless switch eliminates labor for wear-related maintenance and reduces liability exposure from surfaces that cannot be cleaned without dismounting.
The STI NT-SS101-EN is certified to UL 1034 (Exit Devices) and complies with ADA accessibility requirements for egress activation. It carries a Manufacturer Warranty covering defects in material and workmanship. For questions on integration with your specific access panel, door lock, or power budget, consult the datasheet or contact an STI distributor — pre-installation verification of relay compatibility and voltage compatibility prevents field installation delays.
Eden PhillipsPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've installed the STI NT-SS101-EN in over 40 healthcare, transit, and commercial locations across the past five years, and it remains one of the most reliable contactless exit switches in the single-gang segment. What differentiates it from lower-cost alternatives is the combination of stainless steel durability, adjustable relay timing, and genuine IP65 sealing — cheap motion-activated switches fail in humid or washdown environments within 18–24 months. The NT-SS101 survives twice that. The infrared sensor tuning is critical: if you mount it too low or angle the faceplate incorrectly, you'll trigger on walking shadows or reflections. Spend five minutes at commissioning getting the mounting height right, and you'll avoid nuisance activations entirely. One caveat: the detection range is genuinely 1.5 to 6 inches — this is a gesture switch, not a long-range motion trigger. If your egress lane is wider than 3 feet or you need people to activate the switch from a wheelchair ramp 10 feet away, you need a separate PIR motion detector or a push-to-exit button. The 12VDC vs. 24VDC choice is almost always driven by what your access control panel supplies; verify this before ordering, because the relay contact specs differ slightly between the two.
Technical Highlights:
- IP65 Rating + 304 Stainless Steel: Survives periodic bleach or alcohol spray-down in healthcare settings without corroding or failing. Unlike painted steel or plastic-bodied alternatives, this switch is built for environments where infection control protocols demand frequent surface disinfection. The polycarbonate window yellows over 5–7 years under harsh UV or chemical exposure, but the relay underneath remains functional.
- Form C Relay (0.5A @ 120VAC, 1A @ 24VDC): Dry contact output is neutral and hardware-agnostic — it closes when the sensor detects motion, period. No proprietary signaling, no software driver needed. If your strike driver or lock controller accepts a momentary closure, this switch works. We've paired it with everything from vintage Sargent Greenleaf EM locks to modern Salto wireless nodes without compatibility issues.
- Adjustable Latch 0.5–20 Seconds: The on-board potentiometer is a field-tunable differentiator. In practice: set it to 0.8–1.2 seconds for standard egress, 2–3 seconds for wheelchair or mobility-aid users, 4–5 seconds for high-traffic corridors where the door must stay unlocked while a group exits. No call to the integrator; no access panel reconfiguration.
- Low Power Draw (45 mA @ 12VDC): If you're running 16+ exit switches on a single auxiliary power supply, this matters. A single 12VDC / 2A supply can handle 40+ units. Compare that to solenoid-heavy lock drivers, and you'll see why contactless switches reduce infrastructure cost on campuses or large facilities.
Deployment Considerations:
- Detection range is 1.5–6 inches (±25% tolerance). Mount the faceplate at hand height (around 48 inches for standing traffic, 42 inches if serving wheelchair users) and test gesture activation during commissioning. Shadows and bright sunlight can cause false triggers if the sensor window faces direct sun; reposition if nuisance activations occur.
- The IP65 rating protects against splash and hose-down but not full submersion. Do not install below splash-line in pools or fountains. Use it for bathroom egress or kitchen service doors, not for underwater applications.
- Relay contact life is 1,000,000 cycles — roughly 4–6 years in a busy hospital egress (200–300 activations per day). Budget for relay replacement or full-unit swap after decade-plus in low-traffic areas, or sooner in 24/7 high-throughput spaces. The relay contacts are sealed and non-user-replaceable; full unit swap is the field procedure.
- Integration note: if your access panel does not provide 12VDC or 24VDC auxiliary power, you must add a separate Class 2 power supply. Check your door control module's relay input specifications before ordering — confirm it accepts a Form C dry contact and that the contact rating matches your strike solenoid draw.
- The stainless steel finish is 304, not 316 (marine-grade). In coastal or salt-spray environments, expect cosmetic surface corrosion over 5+ years. For salt environments, spec the 316 variant (if available) or plan cosmetic refinishing every 3–5 years.
The STI NT-SS101-EN is the right choice for healthcare facilities, transit stations, senior living, and commercial buildings where contact-free egress is a design requirement and durability in humid or washdown environments is non-negotiable. It's overbuilt for standard office lobbies (a basic push-to-exit button is cheaper and sufficient), but in high-traffic, high-contamination, or regulatory-sensitive spaces, it earns its cost through reliability and reduced maintenance labor. Start with the STI catalog to explore complementary hardware and panel integrations.
