Code Alarm CR3 - Manual (Page 19)

C002332_09_CR3 User Manual - 13 Save Settings
1.6.5 - Cabled Reader - Time Out Settings
Scan one of the codes below to set the amount of time a cabled CR3 will be enumerated before enter-
ing sleep mode. The battery is re-charged at the fastest rate when CR3 is in sleep mode:
Cabled - 2 hours Cabled - Always (Default)