RED ALERT WiFi VoIP Surface-mount Emergency/Access Telephone, Alum.: WiFi VoIP Keypad - "HELP" Button - CALL Button Telephone - Number of Handsets Handset Not Included - Number of Lines 1 - Electronic Ringer - Speakerphone Yes - Mount (Type) Surface Mount or Pole Mount - Voicemail No - Call Waiting No - Caller ID No - Requires 24-48VDC External Power Input (120/240VAC-24VDC Plug-In Supply Provided) - Enclosure Type NEMA 3R - Features Wi-Fi VoIP - Hands-Free