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Using AT+ZNLOCKBAND Command
Band
Command
B1
AT+ZNLOCKBAND=1,0,1,0
B3
AT+ZNLOCKBAND=1,0,4,0
B5
AT+ZNLOCKBAND=1,0,10,0
B28
AT+ZNLOCKBAND=1,0,8000000,0
B40
AT+ZNLOCKBAND=1,0,8000000000,0
B41
AT+ZNLOCKBAND=1,0,10000000000,0
Note: To Enable Two or More Bands Use...