The NP150 is a SIP interface solution for connection of Natcomm DP2 audio doorphones. It has an auto-answer function to pick up incoming calls and an auto-dial out function to call a programmed number when the Doorphone button is pressed. An internal DTMF decoder allows the user to activate two independent relay outputs to open doors and gates using a telephone keypad sequence.
Customers also use the NP150 without a door phone for input-triggered dialling, with applications such as dial out when a PIR sensor is triggered. This allows a remote operator to activate the relays to signal alarms and alerts.
SIP configuration is straightforward by accessing the device over an IP network and logging in to a control panel. The device can be set for DHCP or fixed IP address and in standard line or for peer-to-peer operation.
The NP150 is housed in a compact and robust wall-mountable aluminium enclosure.