UNI-T UT255C, Operating Manual

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4) Data transfer
The detector has wireless data transfer function. When the detector is in testing mode, the
testing results are transferred to the receiver in wireless manner, then the receiver displays
the testing results in real time and clearly.
The detector transmits signal only in testing mode. If the receiver does not receive
transmission signal, it will display the symbol “no - -” dynamically. The straight-line distance of
wireless transfer is about 100m, the wireless signal can penetrate wall to achieve data
reception.
2. Operate the receiver
1) Power on/off
With the pressing of the button “ ”, the receiver is powered on and then enters data
reception mode. If the brightness of the LCD is low after the receiver is powered on, the battery
voltage may be low, please replace the battery in time. 15 minutes after the receiver is powered
on, the LCD flashes continuously to indicate the receiver is going to power off automatically,
30 seconds after that, the receiver powers off automatically, so as to reduce power
consumption. The receiver can continue working if “ ” is pressed when the LCD flashes
continuously.
In HOLD mode, press “ ” to power off the receiver.
In data viewing mode, long press “ ” (more than 3 seconds) to exit data viewing mode and
return to data reception mode, then press “ ” to power off the receiver. The symbol “End”
appears when exiting data viewing mode.
2) Data reception