Spec Sheet Preview: The Alpha Communications® / S.T.R.™ ECD2 QwikBUS™ Dual Input Wiring Harness Connectors are designed to be used in conjunction with the FSE1500 series QwikBUS™ intercom/emergency stations and VFSE1500 series video-intercom/emergency stations. When the ECD2 harness is plugged into the FSE1500 or VFSE1500 station's PC board auxiliary connection it allows up to two (2) dry contact closures to trigger a call (or event) on the QwikBUS™ system, by means of the connected AlphaEntry™ (v3 or later) PC Master …