Prime Products AC Line Monitor/Polarity Tester

This product has been discontinued.

We have discontinued this product permanently. Please find alternative products from below section.
Make sure you are operating your appliance within the safe operating range of 110 to 130 VAC.
Item # 19302
Color Gray
Special Order Item No
Ships LTL Freight No
Out of Stock

Description / Prime Products AC Line Monitor/Polarity Tester

Some appliances overheat and are permanently damaged when operated above or below safe operating range.

Voltage sensitive appliances include: air conditioners, tv's, computers, battery chargers, air compressors, power saws and more....

More Information

Item # 19302
Brand Prime Products
Model 12-4058
Fits 120V Outlet
Color Gray
Features Easy to read digital display constantly shows outlet voltage in one volt increments.
Built in tester alerts you to any polarity problems.
LED display indicates if there is reversed polarity, open neutral or open ground.
Dimensions 2-1/4" W x 3-1/8" H x 1-15/16" D
Made in China
Net Weight .4
Gross Weight .45
Special Order Item No
UPC 763581238049
LTL Freight No

Customer Reviews

Review by
Bought 2 and built a 220v pedestal tester work great!
just what I expected
Review by
This product is just what I expected. I will get great use of this in protecting my electrical system

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WARNING: This product can expose you to chemicals, which is known to the State of California to cause cancer and reproductive harm. For more information, go to