Texas Instruments WR-25 - Manual (Page 8)

Press select a second time and the unit displays the indoor temperature. Press the maximum or
minimum key to enter the actual temperature.
Press select a third time - the unit displays the outdoor temperature. Press the maximum or
minimum key to enter the actual temperature.
Press select a fourth time, and the unit displays barometric pressure. Press the maximum or
minimum key to enter the actual barometric pressure.
WR-25 Instruction Manual
Texas Weather Instruments, Inc. WR-25 Instruction Manual