User Manual
Confidential 
Patent #’s 7,420,471 
5,939,986 and 6,810,353 
Patent Pending
  Page 6 of 7 
Strata Proximity Systems Surface Display with Silen Zone Users Manual v1.0 
Confidential and Proprietary 
October 19, 2011 
with Silent Zone on the machine, performance of the unit should be verified by calibration and 
test.  
2.1.1  Interoperability Warning 
The Surface Display with Silent Zone may experience erratic responses when in very close 
proximity to some electronic devices. Electrical devices may transmit an electrical field and 
noise from these fields may cause interference with the Surface Proximity Module. A safe 
guideline is to keep the Surface Proximity Generator at least 75 mm away from any electrical 
devices included but not limited to methane monitor, radio, mobile phone, GPS, PDA, battery 
charger and laptop computers. 
2.2  Charging 
The Surface Display with Silent Zone is directly powered from the controller board and requires 
no internal battery or charging. 
2.3  Alerts 
The Surface Display also has 4 LEDS which in the case or a Warning or Danger condition, 
indicate which Surface Proximity Modules (another component of the HazardAvert System) are 
detecting the Warning or Danger condition.  
There is also a sounder on the Surface Display with Silent Zone Transmitter which creates 
audible alerts to the operator of a Warning or Danger condition.  
2.4  Maintenance 
The Surface Dislay Unit with Silent Zone should be regularly cleaned to reduce buildup of dust 
and dirt. 
3  Warranty 
Initial system hardware components will be warranted to be free of defects for a period of one 
(1) year from in service date. Subsequent component purchases will be warranted one (1) year 
from receipt acknowledgement. Warranted replacement or repair is not applicable in cases of 
physical damage or abuse as determined at the time of return or inspection. 







