Sanwa DG7 Pocket Insulation Tester 

■Suitable for low voltage insulation measurement for telephone installation and fire alarm.

■Test voltage DC50V / 25V
■Wide measurement range 1kΩ〜40MΩ
■High resolution 0.001MΩ (1ｋΩ)
■Data hold
■Zero ohm adjustment function ADJ (REL)
■Auto power save (30min.)

Sampling rate : 2 times / sec. for numeral display, 20 times / sec. for bar graph