Functons: * 6 LEDs indicate different working status

* AC power detection (detection distance not less than 60mm)

* wall stud finder for wood (positioning depth of approximately 20mm)

* wall stud finder for metal (detection depth about 80mm) 

* distance measuring function (0.03 ~ 120M), with an accuracy of ± 3mm 

* measuring units available: meters/feet/inches

* memory function of the last measuring mode

* prompt sound of power on/off

* prompt sound of detection startup

* LED warning of detection signal strength and sound reminder

* automatic shutdown when battery is low or when there's no button operation in 3 minutes

* power indicator