Surface mounting Binary Input to read out floating contacts. To connect conventionel push-buttons or auxiliary contacs like door and window contacts. 4 integrated logical modules. Each input could be parameterised individually and offers functions like debounce time, counting of pulses, telegramm rate limitation, operation of blinds and shutters, NO or NC contact operation and block communication objects. Device for installation on wall or into ceiling. Dimensions:(W x H x D) : 100mm x 40mm x 88mm Integrated bus coupling unit. Busconnector red/black included.