AT&T ATTSB67138 SynJ 4-Line Expandable Business Phone System APC Replacement Battery Cartridge (#32) Noise Reduction Rating (NRR): 39dB

Noise Reduction Rating (NRR): 39dB

• Surge-protection LED illuminates when on & supplying conditioned utility power to plugged-in equipment

600TVL horizontal resolution

IR night vision up to 135ft in ambient lighting & 90ft in total darkness

AT&T ATTSB67138 SynJ 4-Line Expandable Business Phone System APC Replacement Battery Cartridge (#32) Noise Reduction Rating (NRR): 39dBDECT 6. 0 technology; 10 intercom number locations; 10 speed dial numbers; 100 name number private phone book directory; Large, lighted display; 3 party call conferencing; Lighted line indicators; Call log: 50 name number Caller ID; Auto attendant on each line; Blue backlit keypad & display; Call screening intercept; Call transfer between handsets & base station; Consultative call transfer; Call waiting; Caller ID display; Chain dialing; Hands free