The Algo 1202 is used to trigger a SIP event when paired with an Algo 8061 IP Relay Controller, Algo 8180G2 SIP Speaker, Algo 8188 / 8188B SIP Ceiling Speaker, Algo 8189 SIP Wall Speaker, Algo 8186 SIP Loudspeaker System, Algo 8128G2 SIP Strobe, or Algo 8301 SIP Paging Adapter & Scheduler. The Algo 1202 is highly visible and easily activated from its large illuminated button. The button is designed as a simple and intuitive interface for improving customer service or for emergency and non-emergency alerting. Requires one of the following Algo products as a SIP interface for operation (connecting via single twisted pair): 8061 IP Relay Controller (supports up to four buttons), 8180G2 SIP Speaker, 8188/8189 SIP Ceiling Speaker, 8186 SIP Horn Speaker, or 8301 Paging Adapter. Rated for indoor use only. See manufacturer's website for specifications. A basic understanding of electrical wiring, computer networking, and Voice over IP experience is recommended. See also similar; Algo 1203 Illuminated Call Switch