# Rechargeable Proximity switch tester is designed to test proximity switches with PNP and NPN outputs. # This tester can be used for testing inductive (metal sensing), capacitive, photoelectric and ultrasonic proximity sensors, and allows the user to quickly and confidently check the operation of sensors, avoiding unnecessary replacement and adding fault finding functionality. # The handheld pocket-size unit comes with an inbuilt rechargeable battery and USB charger. # It can be used with two sensor voltages i.e 5V and 24V. # TM800 Proximity Switch Tester can be used as a power-bank to charge iPhone and Tablet.