V27A 0.56" LED Two Line 3-Digital Alternating Current Voltmeter - Black (AC 75~300V)

Pros: Simple Voltmeter. Good case. Ideal for adding voltage measurement at home installations in a very inexpensive way. Quite accurate compared to Fluke Voltmeter. Display has good visibility since it is 7-segment LEDs .

Cons: No cons. Could have at least simple instructions sheet or specifications. Not a big deal, but...

Other: It makes the trick. Simple and inexpensive.

Pros: Surely you have happened to notice your home bulbs shining with a yellowish tinge. This is surely a sign of a low voltage power supply network that provides your power company. Depending on how low it is, can seriously damage household appliances especially those bearing motors. Knowing the voltage level in order to make the decision to disconnect from the network, or not always mean having a hand instrument. That is why this little meter added to a control panel is ideal for reading a tension instantly and hassle free. Easily connects to your power supply and operates from the beginning.

Cons: No one so far.

Other: If you ever went through the aforementioned situation add it to your board without hesitation.