Remote Touch Tone Controller, with 1 Normally Open or Normally Closed Relay Contact. The RC-2A Remote Controller provides remote relay operation from any standard Touch Tone telephone. The controller is designed to be installed either locally or remotely. For local installations the RC-2A can be installed in series on any analog communications path, such as analog C.O. lines, analog PABX/KSU stations or Viking s W-Series Doorboxes. and will passively monitor for Touch Tone commands. For off-premise applications, the RC-2A will answer analog C.O. lines or PABX/KSU stations after a selectable ring delay. A field programmable access code can also be programmed to prevent unauthorized usage. The RC-2A will then allow remote relay operation. Note: For applications where more than one relay closure is required, the RC-3 is available Applications Remote Control of: High security building entry Heating/cooling equipment Pumps and fans Security systems Gates Lighting PABX/KSU reset Features Programmable access code Normally open or normally closed relay Selectable relay closure times Selectable ring delay (1, 2, 6, or 15) Easy installation with modular jacks and screw terminals Automatic disconnect or return to secure mode after 60 seconds One year warranty Made in the USA.