... Warning, including input over or under-voltage, output over or under-voltage, over-temperature, reverse connection, phase failure, and short circuit protection. ... : Model Name: ZHCL-3 1. detect 2 route voltage for 3 phase AC input, automatic switch to the other route AC ... :Model Name: DCXJ-19 1. detect 19 single battery voltage, the battery standard voltage is 12V.2. detect 1 route battery ambient ...