Important Safety Instructions

You must keep safety in mind when you install and use the DP21 switch. Refer to the safety instructions in the installation instructions that came with your system. In this Guide, the following notes tell you when you need to pay special attention:

Marks a procedure where the following may happen:

•Personal injury or death may occur.

•Equipment or property may be damaged.

Marks the following issues:

• Important operation or maintenance instructions follow.

• Special attention is required.

Important Regulatory Factors

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1)this device may not cause harmful interference, and

(2)this device must accept any interference received, including interference that may cause undesired operation.