*Simplifies installation of any CCTV, Access control, or security application
*Eases troubleshooting, check at a glance if there is power.
*Check for low voltage AC/DC before connecting your device:
Correct DC Polarity - Blue
Incorrect DC Polarity - Red
AC Voltage - Purple
*Safety: Illumination glows from all directions to indicate voltage.
*Saves Money and Time: Test power before connecting equipment
*5~30 VAC/VDC range
*LED shines brighter as voltage increases.