Applications
Passive anti-humidity and anti-condensation protection for IP65+ enclosed large volumes. Solar inverters, EV chargers, outdoor telecom cabinets, payment kiosks, industrial cabinets, storage containers, and urban infrastructure. Zero energy, zero maintenance, unlimited lifetime.
✓ Field-validated: 85 days, 24,385 measurements, ÷2.6 on time spent in condensation zone. Read the field study →
The problem with large enclosed volumes
Enclosed large volumes — industrial cabinets, storage containers, wall-mounted solar inverters, EV chargers, outdoor telecom cabinets, payment kiosks — are never perfectly hermetic to water vapor. Thermal breathing causes progressive humidity accumulation, until condensation forms on internal walls and components.
On an asset deployed for 15 to 25 years outdoors, this represents several thousand cumulative thermal cycles — far beyond the resilience of factory calcium chloride packs or pressure vents alone (which don't adsorb vapor).
Corrosion
Metal structures, contacts, terminals, HV power modules
Mold
Stored goods, internal walls, insulation
Failures
Electrical equipment, power electronics, payment electronics
TCO and hidden cost
Internal condensation doesn't fail an asset overnight. It generates a slow drift in failure rate — and this drift weighs on TCO over 15-25 years of deployment.
~ 40%
of environmental failures
On industrial sensors and equipment — linked to internal condensation and trapped humidity. Bosch / IFM / TE Connectivity diagnostics →
$550-2,200
per field intervention
Remote outdoor infrastructure — travel, replacement, downtime, SLA penalties. Multiplied for height-access, isolated sites, or sites requiring lift equipment. Sources PTC Field Service, SightCall.
$330-1,650/yr
electricity per cabinet
Peltier cooler or resistor + hygrostat. 50-300 W (~30% real duty cycle) at 0.20 USD/kWh. Sources Pfannenberg, Stego.
On a fleet of large-volume outdoor infrastructure deployed over 10 years:
For a personalized estimate on your fleet, contact us for an AS-C quote →
Current solutions
Most outdoor infrastructure designers and operators today combine several complementary solutions. Here's what each does — and doesn't.
→ AS-C is the direct alternative to calcium chloride: zero replacement, zero brine, unlimited lifespan. Full analysis →
→ AS-C and Gore Vent are complementary, not competing.
→ AS-C reduces the load on existing climate control, or replaces it on new deployments in temperate climates.
→ None of these 4 solutions combines passivity (zero energy), longevity (unlimited lifetime) and direct wall integration. This is exactly what AS-C tape does.
The solution
AS-C tape is a 2 m × 8 cm pre-adhesive band based on patented SRD® mesoporous material. It bonds directly to internal walls and autonomously regulates humidity in large volumes.
Field proof
In partnership with a French EV charging operator, So Sponge conducted an 85-day field study on 3 outdoor IP65 EV chargers during winter 2025/2026, with 24,385 measurements at 5-minute intervals.
÷ 2.6
time spent in condensation zone
Comparison control charger vs AS-C-equipped charger
÷ 3
internal humidity variability
Marked stabilization of internal climate
0.02
internal/external RH correlation (vs 0.54)
Internal regulation nearly independent of climate
Note: the field study rigorously validates EV chargers with passive thermal regulation (residential and commercial AC). For chargers equipped with forced ventilation or active climate control (DC fast charging, some premium ATMs), AS-C application scope is different — see details on child pages.
Active validations
Active validation programs with European and international leaders whose thermal constraints overlap the large-volume scope.
Aerospace / Defense
Leading European group, UL qualification ongoing on severely cycled cabinets.
Medical X-ray imaging
Thales group company — published experimental study. Read →
Weather instrumentation
Leading Nordic manufacturer, outdoor instruments under strong gradients.
Industrial vision
German manufacturer, outdoor optical equipment.
Outdoor robotics
European autonomous agricultural robot manufacturer.
Use cases
Direct alternative to calcium chloride bin on large volumes: zero replacement, zero brine to handle.
Solar inverter / Photovoltaic
String, central, microinverter — preserve yield over 25 years.
EV charger
Residential & commercial AC — a French EV charging operator 85-day study.
Outdoor telecom cabinet
Fiber cabinets, outdoor ONUs, 5G BBUs, shelters.
Outdoor payment kiosk
Parking meters, tollbooths, ATMs, drive-through.
Industrial storage container
Long-term storage, maritime transport, archival.
Outdoor advertising & bus shelters
Bus shelters, DOOH panels, outdoor LED screens.
Automatic barriers & gates
Outdoor motorization, access control.
Your application?
Contact us to study your caseLooking for a solution for small or mid-size enclosures? IoT outdoor sensors, CCTV cameras, medical instruments, robotics, embedded electronics. → See Applications Electronics & IoT
Going further
Solar inverter IP65 & condensation
Outdoor inverter failures and field solutions
Thales study: industrial equipment condensation
Medical X-ray imaging — experimental validation
Anti-condensation solutions for storage containers
For long-term storage
Calcium chloride in cabinets — the forgotten consumable
Why replace this traditional solution
Comparison of 5 anti-condensation IP65+ solutions
Market overview
Discover AS-C Tape or contact us for a personalized study.