Progressive Industries 50-Amp Surge Protector offers surge protection with indicator for high & low voltage, a built in frequency meter, AC frequency protection, a built in amp meter, a built in voltmeter, line fault protection, & error detection. It has the high-low protection time delay for air conditioning compressor in your RV which is so important to protect a very expensive system to repair or replace. The micro processor is weather resistant and has a built-in lock bracket.
It is 5" W x 16" L x 3" H with a one year warranty.
High low voltage protection
Time delay for air conditioning compressor
Open neutral protection
AC frequency protection
Accidental 220V protection