100414 ALPHA 608A 100415 1-L8 SERIES 3000 F2 FO3000F2 TX 407 35BS0002 390029 4008 100069 580D ALPHA 2000 ALPHA 3000 F2 ALPHA 3000 F2 ALPHA 3000D2 COMBO-SYSTEM 1 RECEIVER + 2 TRANSMITTERS ALPHA 500 ALPHA 500 SERIES ALPHA 520 OBSOLETE, REPLACEMENT 100478 / ALPHA 604B / 12-24 VDC OR 100477 / ALPHA 604B / 110-240 VAC!!!!;