AT&T DLC-100 User Manual page 55

433MHz Repeater Features and Operation
NOTE: Be sure to observe the polarity of the batteries during battery replacement.
After you have installed new batteries, plug the 433 MHz repeater back into the lower
socket of the AC outlet. Then replace the retaining screw in the plastic tab at the top of
the siren and secure the 433MHz repeater to the AC outlet.
Digital Life User Manual | ATT-UM-V1.1-201303
Page 45 of 62