Principles of operation.
1. Module ON/OFF events.
The module is designed to be powered from a permanent 12volt supply. A ground connection to the enable input will activate the module which will respond with an "alarm on" message. The enable signal would be normally supplied by the alarm unit. Removing the grounded enable signal (e.g. turning the alarm system off) will cause the module to respond with an "alarm disarmed" message. If your chosen alarm system CANNOT supply a signal which meets this criteria then you may want to consider the Protalk Mark 2. Click here for more details.
If the enable input is grounded within 10 seconds of the switch off event then the module will respond with the "alarm on" message followed by a "silence mode" announcement and will ignore all movement sensor trigger events while in this mode. This feature is designed to prevent unwanted alarm events if the system becomes located in an environment which may cause the movement sensor to misbehave.
Want to here how the module sounds? Click here to play a sample message.
2. Warning and Alarm trigger events (Normal mode).
If the module trigger input is grounded (e.g. from a signal originating from a movement sensor) then the first warning message will play. If there are no further trigger events occurring within the next 15 seconds then the next trigger event will cause that same warning message to play at that time. If a second trigger event occurs with 15 seconds of the first then the module will play the second warning message. If a third trigger event occurs within 15 seconds after the 2nd event then the third message will play followed by a one second ground signal at the alarm trigger output. This output would normally be connected to an auxiliary input on the alarm module which will respond accordingly.
3. Voice Selection
The modules' voice can be switched between male or female by moving the MF link on the printed circuit board. The 4 cover screws must be removed to perform the change. The factory default is link installed which results in a male voice. Remove and park the link to switch to the female voice. Alternatively the selection can be made by wiring the main connector pin 4 and a ground wire to a small remotely installed SPST switch. The circuit board link must be removed for the remote function to work. Note that the standard wire harness does not include a wire connected to pin 4. Davnelle Electronics can supply spare pins for the wiring plug upon request (no charge).
4. Loop Mode.
The module may be placed in loop mode by installing the NL link on the circuit board as described in point 3 above. The factory default is link removed or parked which defines normal mode. Alternatively the selection can be made by wiring the main connector pin 6 and a ground wire to a remote SPST switch. The circuit board link must be removed for the remote function to work. Note that the standard wire harness does not include a wire connected to pin 6. While in loop mode the module will operate as described above however it will only play the first warning message when triggered and will never output an alarm trigger signal. Normal mode can be restored by removing the NL link or opening the remote switch if fitted.
