Bus pushbutton coupler for 4 conventional buttons for connection to FTS14TG pushbutton gateways. Stand-by loss only 0.2 watt. For panel mounting. 45mm long, 45mm wide, 18mm deep. Up to 30 bus pushbuttons and/or bus pushbutton couplers FTS61BTK can be connected to a FTS14TG pushbutton gateway via the bus cable. The RLC link supplied with the FTS14TG must also be connected to the BP and BN terminals on the bus pushbutton or bus pushbutton coupler that is furthest away. Please use only common bus or telephone lines. Power is supplied from the FTS14TG. With a maximum cable length of 2 meters, up to four conventional buttons can be connected to T1, T2, T3, and T4. Pairs T1/T3 and T2/T4 can be defined as direction buttons. The opposite pole is the T0 terminal. The bus is connected to BP and BN. Observe the correct polarity! The LED lights up green as soon as the supply voltage is available via the bus and a device address has been assigned.This text is machine translated.