- Handsfree operation- Phone line powered- Vandal resistant, stainless steel faceplate with heavy-duty metal call button- Non-volatile E2 memory (no batteries required)- Touch Tone or pulse dialing- Programmable to dial up to 5 numbers on busy or ring no answer- Red off-hook LED indicator- Hangs up on CPC, silence, busy signal, return to dial tone, time out or a Touch Tone command- Programmable to auto-answer on incoming calls- Remotely programmable- Extended temperature range (-15rF to 130rF)