The STI EP242410-O2 is a UL50 NEMA-rated polycarbonate enclosure with factory-installed air conditioning and heat, ideal for outdoor and unconditioned-space fire alarm control panel installations. First, the polycarbonate shell resists impact, UV, and corrosion. Then the integrated A/C and heater hold the interior within the panel’s operating temperature year-round. As a result, the protected equipment stays within spec from sub-zero winters through summer rooftops.
What EP242410-O2 is built for
Fire alarm control panels, addressable annunciators, and similar electronics carry tight ambient-temperature operating ranges. However, outdoor installations, rooftop equipment rooms, parking-structure corners, and unconditioned utility buildings routinely exceed those ranges. Therefore, the EP242410-O2 provides both physical protection and active climate control in a single weather-rated enclosure.
Verified STI EP242410-O2 specifications
- NEMA rating: UL50 Type 3R, 4, 4X, 6P, and 12
- Construction: High-impact polycarbonate, UV resistant
- Door: Opaque hinged door with draw-down latch; lockable or screw-down
- Dimensions: 24 in. H x 24 in. W x 10 in. D
- Climate control: Factory-installed air conditioner and heater
- Polycarbonate working range: -40°F to 250°F (-40°C to 121°C)
- Protection from: Vandalism (accidental or intentional), dirt, dust, grime, rain, ice formation, hose-down, occasional submersion
- Family: STI EnviroArmour heated polycarbonate NEMA enclosure series
How the -O2 fits the EP242410 family
The EP242410 base is the plain polycarbonate enclosure. However, the same enclosure ships in multiple feature configurations under different SKUs. Specifically: -O = opaque, no climate control; -T = tinted, no climate control; -O2 = opaque with A/C and heat (this SKU); -T2 = tinted with A/C and heat; -O3 / -T3 = NEMA 3R filter fan; -O5 = filter fan plus power distribution. As a result, specify the -O2 when the panel needs no view through the door but the ambient environment demands year-round climate control.
Why opaque vs. tinted matters
Opaque doors block all view of the panel inside. Therefore, specify the -O2 when the installation requires concealing panel status indicators from view — for example, in publicly accessible spaces where status LEDs could expose system condition to bad actors. Alternatively, the tinted -T2 lets a technician confirm power and trouble LEDs without opening the door. Furthermore, opaque doors also slow solar heating of the interior in direct-sun installations.
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.
Additional information
| Weight | 5 lbs |
|---|---|
| Dimensions | 24 × 24 × 10 in |
| Condition | New |
| Specification | 24x24x10 in, Polycarbonate, Opaque door, Built-in A/C unit + heater, Thermostat-controlled |
| Part Type | Enclosure |
