This is an industrial style, commercial grade auto dial wall-mounted phone. It's designed to auto dial a user programmable phone number (up to 25 digits long) when handset is picked up (off hook). This phone is perfect for emergency applications (elevators, courtesy lobbies, airport, schools, hospitals, etc), and used by many banking institutions, in-store promotions, money transfer companies and others. It also has a traditional bell ringer so it can also be used to receive incoming calls. It has no dialpad or keypad. Hotline Dialer Telephone Specifications: ▶ Auto dials a frequently called telephone number ▶ Works on any analog phone line (PSTN, VOIP) that is FSK or DTMF compatible ▶ Telephone line powered ▶ Retains programming even if disconnected from phoneline (EEPROM technology) ▶ Dialer can be programmed using any analog phone line ▶ Weight: 1.5 lbs ▶ Easy to install and program (Comes with wallplate and do-it-yourself programming instructions)