Monroe 275A-1 接地系统测试仪

Indicators, LED: 

RED Hazard: Resistance below 500kΩ

GREEN Safe: Resistance between 500kΩ and 10 MΩ or 100MΩ (selectable)

and 10 MΩ or 100MΩ (selectable)

YELLOW Open: Resistance above 10MΩ or 100MΩ


Audible alarm: Sounds for Open or Hazard condition

Tolerance: +10% of value

Battery: 9 volt, Eveready 216 or NEDA #1604


Size: 3.8” x 2.4” x 1.1”

Weight 4 oz

Accesories: Manual, connecting cable, 9V battery



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