P/N: 100496 Alpha 5000 100423 ALPHA 604B old version, new version ALPHA 604BS; ALPHA 580B ALPHA 612BS 100415. Alpha 540A Transmitter ALPHA 500 ALPHA 560A obsolete, replaced by ALPHA 607BS;Remote controller and receiver Alpha 607BS 230VAC EN 13849-1 2P-4012-1S- RX Ersatzsender für ALPHA 580A USBPCB 6001900 6001897