EST3 Installation and Service Manual  v 
Important information 
Limitation of liability 
This product has been designed to meet the requirements of 
NFPA Standard 72; Underwriters Laboratories, Inc., Standard 
864; and Underwriters Laboratories of Canada, Inc., Standard 
ULC S527. Installation in accordance with this manual, 
applicable codes, and the instructions of the Authority Having 
Jurisdiction is mandatory. GE Security shall not under any 
circumstances be liable for any incidental or consequential 
damages arising from loss of property or other damages or losses 
owing to the failure of GE Security products beyond the cost of 
repair or replacement of any defective products. GE Security 
reserves the right to make product improvements and change 
product specifications at any time. 
While every precaution has been taken during the preparation of 
this manual to ensure the accuracy of its contents, GE Security 
assumes no responsibility for errors or omissions. 
FCC warning 
This equipment can generate and radiate radio frequency energy. 
If this equipment is not installed in accordance with this manual, 
it may cause interference to radio communications. This 
equipment has been tested and found to comply within the limits 
for Class A computing devices pursuant to Subpart B of Part 15 
of the FCC Rules. These rules are designed to provide 
reasonable protection against such interference when this 
equipment is operated in a commercial environment. Operation 
of this equipment is likely to cause interference, in which case 
the user at his own expense, will be required to take whatever 
measures may be required to correct the interference. 
Industry Canada information 
Note: The Industry Canada label identifies certified equipment. 
This certification means that the equipment meets certain 
telecommunications network protective, operational, and safety 
requirements. Industry Canada does not guarantee the equipment 
will operate to the user’s satisfaction. 
Before installing this equipment, users should ensure that it is 
permissible to be connected to the facilities of the local 
telecommunications company. The equipment must also be 
installed using an acceptable method of connection. The 
customer should be aware that compliance with the above 
conditions may not prevent degradation of service in some 
situations.