CH102, CH402, CH702, CH902 is a very popular controller on the markets, comes with relay and SSR Drive output, relay and SSR Drive output at the same time, faciliated wiht different terminals, if you want to use the relay output, then connect your AC contractor or SSR with the relay output terminal, if you want to use SSR drive output, then connect your solid state relay with SSR Drive output terminal, with 1 alarm and works on wide range of power supply, works with thermocuple and RTD inputs despite the cost being very competetive.