Algo 8028 SIP Door Phone / IP Intercom<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Single pair 24 AWG wiring up to 1，000 Ft (300 m) between door station and controller for easy new or retrofit installations</li><li>Flush or surface mount (i.e.， dual gang) weather-resistant enclosure</li><li>Choose Stainless Steel or Brass Faceplate; Both are included</li><li>Backlit call button; Configure device settings via Web Interface</li><li>SIP compatibility with all leading UC vendors including: Avaya， Broadsoft， Cisco， Digium/Asterisk， Mitel， Metaswitch， NEC， and Polycom and most others</li></ul></div><img src="http://ecx.images-amazon.com/images/I/513kRx8iV%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61uxJfHYYyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51gKzj5fBpL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/516ouoHB4zL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51oDljncKwL.jpg" noproxy>