[amazon.com](https://npw.clicorice.ca/links/6P8iPs) has this Tacklife Non-Contact AC Voltage Tester Pen w/ LCD Display on sale for **$9.76**

* Adjustable Sensitivity
* LCD Display
* LED Flashlight
* Buzzer Alarm
* Dual Range 12V-1000V/48V-1000V
* Live/Null Wire Judgment