Standard WRIST STRAP TESTER has a single test range 0.75 meg-ohms to 35 meg-ohms. The instrument has a green light for pass (i.e. resistance between 0.75 meg-ohms and 35 meg-ohms) and 2 red lights which indicate either High resistance fail or Low resistance fail. A buzzer sounds in any fail situation.
Unit has banana socket and 10mm stud. (Requires 9 volt battery).Very easy to use