IES-0880 User Manual
Page 11
Alarms for Power Failure
There are two pins on the terminal block used for power failure detection. It provides the
normally closed output when the power source is active. Use this as a dry contact
application to send a signal for power failure detection.
Special Note
The relay output is normal open position when there is no power to the switch. Please do
not connect any power source to this terminal to prevent shorting your power supply.