Check the listing for details. Silent Call Communications Receiver Sidekick II w/Strobe Light, Legacy Series.. Color: Silver, Condition: New, Made in United States. Listed at 18.97 USD. Legacy series. Alert you to phone calls, doorbells, sounds, weather alerts, fire and more. Identify events with a flashing strobe light and colored LED lamps. Works with all legacy series 113 MHz transmitters. Includes a digital clock with alarm Telephone cord and dual connector. Plugged into any 110 V outlet, with included power supply. Product manual.Legacy series. Alert you to phone calls, doorbells, sounds, weather alerts, fire and more. Identify events with a flashing strobe light and colored LED lamps. Works with all legacy series 113 MHz transmitters. Includes a digital clock with alarm Telephone cord and dual connector. Plugged into any 110 V outlet, with included power supply. Product manual.