Specifications:

• Operation:
  Forward position:S – sound on
  Center position:O – power off
  Back position: V – vibration on
• Indicators:
  Solid yellow LED: AL – target detected
  Flashing green LED: Pw – power on
  Flashing red LED: BT – low battery indicator
• Detection distance
  Pin 30-60mm;
  64 model handgun 150mm
  6-inch long knife 160mm
  Steel ball 90mm
• Alarm mode:
  Sound mode: Buzzer with red LED
  Vibration mode: Vibrator with red LED
• Operating temperature: -20 to +70 centigrade
• Weight:220G
• Dimension: 375（L）X77（W）X26mm（T）
• Power supply: Standard 9 volt battery