Qufield Linkman LM-T910 User Manual page 2

2. Setting of Group ID
The Transmitter's Group ID must be the same as Receiver's Group ID.
No.1 No.2 No.3 No.4
No.9 No.10 No.11 No.12
Call Button
Clear Button
LED Lamp
Case
No.5 No.6 No.7 No.8
No.13 No.14 No.15 No.16