Compatible with the cover kit 2-gang, complete, ref.-no.: xx 402 TSA xx Compatible with the cover 2-gang with symbols, ref.-no.: xx 402 TSAP xx Can be extended by means of a push-button extension module, ref.-no.: 409x TSEM Adapter frames are included in delivery: ref.-no. LS 4 AR for LS range (pre-mounted) and ref.-no. CD 4 AR for CD range. AS / A ranges without adapter frame.Only with the ETS 3.0d version or later versions the full functionality will be available. ETS product family: Push-button Product type: 2-gang push-button 1 blue LED: operation indication 4 red LED: status indication