P/N 3102309-EN • REV 001 • ISS 18JUL19 iii
Important information
Regulatory information
This product has been designed to meet the requirements of NFPA 72 National Fire Alarm Signaling Code,
UL 864 Standard for Control Units and Accessories for Fire Alarm Systems, and CAN/ULC-S527 Standard for
Control Units for Fire Alarm Systems.
Limitation of liability
To the maximum extent permitted by applicable law, in no event will United Technologies Corporation be liable for
any lost profits or business opportunities, loss of use, business interruption, loss of data, or any other indirect,
special, incidental, or consequential damages under any theory of liability, whether based in contract, tort,
negligence, product liability, or otherwise. Because some jurisdictions do not allow the exclusion or limitation of
liability for consequential or incidental damages the preceding limitation may not apply to you. In any event the
total liability of United Technologies Corporation shall not exceed the purchase price of the product. The foregoing
limitation will apply to the maximum extent permitted by applicable law, regardless of whether United
Technologies Corporation has been advised of the possibility of such damages and regardless of whether any
remedy fails of its essential purpose.
Installation in accordance with this manual, applicable codes, and the instructions of the authority having
jurisdiction is mandatory.
While every precaution has been taken during the preparation of this manual to ensure the accuracy of its
contents, United Technologies Corporation assumes no responsibility for errors or omissions.
Advisory messages
Advisory messages alert you to conditions or practices that can cause unwanted results. The advisory messages
used in this document are shown and described below.
WARNING: Warning messages advise you of hazards that could result in injury or loss of life. They tell you which
actions to take or to avoid in order to prevent the injury or loss of life.
Caution: Caution messages advise you of possible equipment damage. They tell you which actions to take or to
avoid in order to prevent the damage.
Note: Note messages advise you of the possible loss of time or effort. They describe how to avoid the loss. Notes
are also used to point out important information that you should read.
EST4 FCC compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at his own expense.
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