SKU: EL642/Plus EL642/PLUS sound module For Nexa push buttons or coded door panels."Plus" digital installation of 4 wires.Additional information Sound module with independent door panel and telephone adjusting level volume. Removable terminal connector for easy wiring. Privacy on audio door open progresses. Electronic call with acoustic acknowledgement signal, confirming the call is in progress, the system is busy or the lock is activated. Connection to push button modules or keypad using small flat cables provided with the modules. Selectable lock activation time. Includes two push buttons.
