典型的工作温度为-40 °到250 ° F（-40 °至121℃）。
Cover includes four inch deep backbox.
For use in wet or wash down areas, rated to NEMA 3R Standards.
All initiating stations are required to be outdoor rated by UL
Proven effective for more than 25 years in helping stop false fire alarms without restricting legitimate alarms.
Can be used as a guard against physical damage.
UL Listed and ADA Compliant for operation.
Not locked; easy to open.
Lifetime guarantee against breakage of polycarbonate in normal use.
The thick, clear polycarbonate cover is UV-stabilized.
Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C).
Comes standard with an "IN CASE OF FIRE - LIFT COVER PULL FIRE ALARM" label.
Custom labeling available (incurs a fee)