Bus button coupler FTS61BTKL for 4 conventional buttons with integrated 24V LEDs for connection to button gateways FTS14TG via a 2-wire button bus. Standby loss only 0.2 watts. For flush mounting. 45mm long, 45mm wide, 18mm deep. Up to 30 bus buttons and/or bus button couplers FTS61BTKL can be connected to the BP and BN terminals of a button gateway FTS14TG. The permissible total cable length is 200m. The RLC element included with the FTS14TG must also be connected to the BP and BN terminals of the bus button or bus button coupler that is furthest away. The 2-wire button bus supplies the connected FTS61BTKL with 29V DC and simultaneously transmits data. Please only use standard bus or telephone lines. Up to four conventional buttons T1-T4 can be connected to the 15cm long connecting cables. The opposite pole is T0 in each case. The connecting cables can be extended to up to 2m. The 24V LEDs integrated in the buttons display confirmation telegrams from actuators if the IDs of the actuators have been entered into the ID table of the FTS14TG with PCT14. Attention! Do not apply any voltage. The pairs T1/T3 and T2/T4 can be defined as direction buttons. The bus is connected to BP and BN. Observe polarity!