Hardware manual

Issue 8 Electra Elite
5 - 4 Installing Electronic Telephone Units
When setting switches on the ETU, wear a wrist strap and
stand on a grounded conductive work surface to avoid static
electricity.
Do not touch the surface of the ETU. A small screw driver
can be used to change the switch settings when the installer
follows the recommended safety precautions.
Figure 5-4 Safety Precautions when Setting Switches on an ETU
Wrist
Strap
ETU
Grounded
Conductive
Surface