Tait TP9100 Series P25, User Manual, Page: 47 / 168

Basic operation 47
Turning the radio on and off
Rotate the power/volume control switch clockwise to
turn the radio on. Rotate the switch counterclockwise
to turn the radio off.
When the radio is first turned on, the status LED briefly
glows red, and the radio gives two short beeps.
Your radio may not turn on if your battery is very
low. (See
"Low battery warning" on page 134 .)
Non-IS battery alert
Warning
Fit only an IS-approved battery to your IS
radio. Fitting a battery or accessory that is not
IS-approved exposes the customer to a risk of
explosion which could cause serious injury or death.
If you have inadvertently connected a non-IS battery
to your radio, the message
IS battery unconfirmed
appears in the display, and the battery icon
periodically flashes
.
For information about identifying IS batteries, see
"Intrinsically Safe radios" on page 16 . If the battery
appears to be an IS battery, and the alert persists, see
"‘IS battery unconfirmed’ alert" on page 143 for more
information.
Using ‘protective power-down’
If your radio is programmed with the ‘protective
power-down’ feature, you also need to press either
function key 2 (side key 1) or function key 3 (side
key 2) in order to turn off the radio. This prevents you
inadvertently turning off the radio when adjusting the
volume to a low level.
To turn the radio off:
IS battery
unconfirmed
Clear
Channel 1
Menu Lock
non-IS battery icon