Check the listing for details. MCS Media Control Systems CTD-3104A DTMF Cue Tone Decoder. Condition: Used. Listed at 339.00 USD. Item Title Photo of actual item. Tested working, power adapter not included (previously sold it with another unit). According to the documentation, it should be a RPS-3002A power supply. Modules included: AVS-3221A, SCM-3002A, CFD-3001A, ALC-3001B The CTD-3104A DTMF Tone Decoder module is designed to monitor a telephone line or audio source and provide a relay closure upon receipt of up to four DTMF (dual-tone, multi-frequency) tone pairs of a pre-determined numerical sequence. These tones are identical to, and compatible with, the standard telephone tone system. It is configured as a standard 3000 series module and is designed to occupy one module space in either a CMF-3000B 3.5” by 19” rack mount frame or a CMF-1000A 1.75” by 19” rack mount frame. The module is approximately 6.25” x 1.25” x 3.5” (L x W x H). All connections to the module are made by means of a 20-pin card-edge connector which mates with the circuit board. All controls and indicators required for normal operation are mounted on the front panel of the module. Ships same business day if purchased before 1pm PST, Monday-Friday.___________________Check our other Computer and tech related auctions:First World Med