● The 890 PR is a Non-Contact phase detector
   with flashing LEDs and a beeping buzzer to
   show the detection of AC 3-phase sequence.
● Two functions in one unit : open phase and 
   phase sequence detection.
● Convenient brightness switch to make the
   indication visible in dim areas or sunlight.
● Back cover magnet attaches the instrument to
   the AC distribution panel offer easy measurement.
● 3-Phase AC 75 to 1000V is fitted for detection.
● Detect frequency range is from 45 to 65Hz.