ChunHee CK01 Wireless Calling System

00:00-00:21 F-1 Pair the Keypad with the Screen
00:22-00:39 F-3 Number Display Duration
00:40-01:09 F-4 Broadcast Voice Prompt
01:10-01:34 F-5 Volume Set
01:35-01:57 F-7 Restore Factory Set