8 line Wireless Terminal 1)lock card,lock terminal 2)support polar-reverse,12 or 16 KHz pulse signal 3)support GPRS 8 line Wireless ... 3,DTMF Caller ID.4,Support secondary dial.5,Lock card, lock terminal.6,Send polarity reversal signal for billing meter ... Receive: > -23dB insure receiving.8,DTMF Receive sensitivity: 99.99%9,Insertion loss: ≤0.5dB 8 line Wireless Terminal/fixed wireless terminal