These are great. I use them as motor power relays on all my underwater robots.
The SSR works as advertised and is a nice addition. The PowerMon-5S shut is reading the voltage too high by 5 volts. Confirmed with a volt meter. Waiting for support from Thornwave if this can be corrected.
Offers the potential of very high reliability and very little parasitic current draw. Only time will tell if long term reliability meets expectations but everything is great so far.
I installed it in my RV to check and control the amperage of a traditional charger and allow me to charge my 12 V LifePo4 battery without risk of damaging it. I paired it with the bluetooth module. It's fantastic to have the information on my cell phone.