Digital Monitoring Products Inc PC0156 User Manual

 

A location should be selected that is centrally located between the 1100 Series transmitters used in the 

installation. Place the EM20 away from metal objects. Placing the EM20 on or near metal surfaces impairs

performance. 

1.   Unpack the 16.5VAC power supply and fully unroll the cord.
2.   Connect the power supply to the Red RJ22 connection on the back of the EM20.
3.  Connect  the  power  supply  to  a  120VAC  outlet  not  controlled  by  a  switch  and

secure with the screw provided.

1.  Turn the EM20 over and remove battery cover.
2.   The new battery comes with the harness pre-installed.
3.  Connect  the  new  battery  harness  to  the  locking  4-pin  header

battery connector inside the battery compartment. Because the 

header is keyed, it can only be installed in one direction.

4.   Re-install the battery cover and turn the EM20 upright.

The EM20 tests the battery once every hour when AC power is present.

This test occurs 15 minutes past each hour and lasts for five seconds.

A load is placed on the battery and if the battery voltage falls below 

11.9V, a low battery is detected. If DC power has failed, a low battery is

detected any time the battery voltage falls below 11.9V.