The Broadcast Tools Alert Sentinel 2 is a two station stereo analog relay/switcher designed to allow the insertion of alert audio into broadcast program signal paths following in the footsteps of the Broadcast Tools STA-III WX. Perfect for remote weather alerts, remote broadcasts, or live sports. It features a POTS telephone hybrid interface and a balanced analog input compatible with a studio console or 2-way/HAM radio as well as an internal 32GB SD-based MP3/WAV audio player for playing pre-recorded messages. Control with DTMF commands via its POTS telephone interface, 2-way/HAM radio audio input, USB serial commands, or TCP/UDP Ethernet commands.Main Features:Live or pre-recorded alert audio insertion for up to two stations. Insertion can occur simultaneously on one or more station outputs, but alerts can not be overlappedInternal 32GB SD-based MP3/WAV audio player for playing pre-recorded messages.Battery-backed real time clock with scheduler.POTS telephone hybrid interface controlled via DTMF commands.2-way/HAM radio audio input controlled via DTMF commandsTransparent signal switching via sealed mechanical relays utilizing 2-form-C bifurcatedcrossbar silver alloy contacts with gold overlay.SPST status relay outputs with LED indicators.Remote control via DTMF, USB serial and TCP/UDP Ethernet commands or contact closure inputs.RJ45 station audio input and output jacks simplify wiring and service.Removable euroblock-style screw terminal connectors for station audio, status relays and contact closure inputs.Fully RFI proofed.Surge protected universal switching 12VDC desktop power supply with IEC AC inlet included.Up to two units may be mounted on the optional RA-1 rack shelf. Desktop and wall mounting is also possible.