Black Box LPH240A-H, Operation Manual

Page: 11 / 56

Chapter 1: Specifications
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Altitude (All models): -200 to 5000ft. (-60 – 15,000 m)
Conformal Coating (optional) for humidity protection
Note: H and P models are designed for NEBS compliance, including
vibration, shock and altitude.
Packaging:
Enclosure: Rugged sheet metal (Steel).
Dimensions of the Switch unit:
3.7 in H x 3.0 in W x 1.7 in D (9.4 cm x 7.6 cm x 4.3 cm)
Weight: all models: 9.5 oz. (285g);
Cooling Method:
Convection on the office model. The Hardened (H) factory floor and
Extreme (P) temperature uncontrolled location models have closed cases
to withstand dirt and use special thermal techniques to transfer heat to
the outside of the case for cooling.
ALARM RELAY Terminal Block, H and P models only, two screw
terminals:
Internal 60VA relay contact: Open for power Off, closed for power On
(Hardware).
Mean Time Between Failure (MTBF):
over 15 years, Telcordia (Bellcore) Method