General description
- optic and a acoustic indication of incoming calls
- used as a connection box for SZM small telephone switch panels
- intended for securing emergency operation on telephone circuits
- can also be used as a simple end-user device for managing 10 telephone circuits
- up to 12 telephone circuits can be connected to the SPNZ
- a spare switch panel for 10 telephone circuits is installed into the connection box
Basic technical description
- set into a plastic box
- connected to the SZM switch panel box with a connection cable with CAN 37 connectors
- telephone line, announcement signal and battery power supply cables are connected to the terminal strip inside the box
- optic and a acoustic indications are set off by incoming call signals
- a control telephone device and switch board are included with the product
Compatibility
- SZM small telephone switch panel
