DC-AC 3-32V DC / 90-480V AC
MicroUSB 5.0V voltage input
5-30V voltage
External triggering and onboard buttons 
With a relay indicator
The module can control: 10A / 250VAC, 10A / 30VDC load
Power interface:MicroUSB and solder terminals 

Datasheet: https://cdn.sparkfun.com/datasheets/Components/General/SSR40DA.pdf

- See more at: http://www.ewallpk.com/home/1268-ssr-40da-delay-relay-module-5v-30v-.html#sthash.gevPLGMY.dpuf