Midland Radio WR-300 - Manual (Page 24)

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ALERT jack. Observe the polarity of the jack so that the negative
side of the external power source is connected to the body of the
1
/
8
inch (3.5mm) phone plug and the device is connected to the
positive source and to the tip of the phone plug.
The internal switch is closed when an alert is received. Pressing
the ALERT ON/OFF button on the front of the radio will open the
switch.
Testing Siren and External Alert devices
If you need to test the sound of the siren alert or the function of an
external alerting device press MENU then the UP/down arrows
until you see SIREN TEST on the display. Press SELECT to
sound the siren and close the switch controlling the external alert
device. The siren will sound and the external device will be
active until SELECT key is pressed again.
NWR Alert Descriptions
This table contains the NWR descriptions of all the types of alerts
that your WR-300 will display. The display text and type of alert
sound are shown for each type of alert
What You See Weather Alert
Description Alert Sound
*(see Defeat Siren)
TORNADO
WATCH
Tornado watch Fast siren
TORNADO
WARNING Tornado warning Very fast siren
SEVERE
THUNDERSTORM
WATCH
Severe thunderstorm
Watch Fast siren *
SEVERE
THUNDERSTORM
WARNING
Severe thunderstorm
warning Very fast siren
FLASH FLOOD
WATCH
Flash flood watch Fast siren *