The Algo 8203 is a vandal proof version of 8201 SIP PoE Intercom. The intercom features a solid milled aluminum face plate with tamper proof screws, concealed and offset speaker grill pattern to prevent sharp object penetration, and a capacitive touch backlit call button that ensures no moving parts. A bezel is included for surface mounting, however, the intercom will also fit a standard double gang box for flush mounting. The product is weather and moisture resistant. The 8203 is generally only recommended for high risk applications (e.g. prison).