STI STI-7510A-HTR Heated Polycarbonate Enclosure with Key Lock
Overview
The STI-7510A-HTR is a heated polycarbonate enclosure rated NEMA 4—meaning it resists water spray and corrosion without submersion. Deploy this where access control readers, credential validators, or electronic door hardware live outdoors or in sub-freezing environments (freezers, unheated warehouses, exterior loading docks). The integrated radiant heating plate maintains the enclosure above freezing, protecting LCD displays and electronic components from freeze-induced sluggishness or failure. Key lock strike on the exterior prevents unauthorized removal or tampering with the device inside. Mounted wall- or pedestal-style.
Compatibility
Fits standard access control reader cabinets, card/badge readers, and controller units requiring environmental protection. Verify the dimensions of your reader, keypad, or electronic lock against the enclosure internal dimensions before ordering—these are protective covers, not expandable. The STI-7510A-HTR accommodates typical reader form factors; larger multi-unit installations may require STI-7510F-HTR (NEMA 4X stainless variant) or the STI-7520-HTR/STI-7521-HTR series depending on capacity and corrosion exposure.
Installation Notes
The enclosure ships with mounting hardware and weatherproof gasket seals included—no separate purchase required. Operating voltage options: 12, 16.5, or 24 VAC/VDC powers the heating element; confirm your power supply can deliver the required circuit. Polycarbonate properties handle -40° to 250°F (-40° to 121°C), so exterior alpine or equatorial installation is feasible. The enclosure includes three thermostats: one control thermostat, one safety thermostat for overheat cutoff, and one alarm function—integrated fail-safes prevent heating runaway. Ensure power leads terminate inside the enclosure with proper strain relief to maintain NEMA 4 seal integrity.
What's in the Box
- 1x STI-7510A-HTR heated polycarbonate enclosure with key lock
- Mounting hardware (exact fastener count and type per installation guide)
- Weatherproof gasket seals
