The G3RV-SR700-A AC110 is an industrial-mount solid state relay (SSR) from Omron, 6 mm wide. The AC110 control voltage means the coil side is designed for 110 VAC nominal — common in North American control panels running 120 VAC control circuits. No mechanical contacts to wear; zero switching noise on the load side. Rated for switching resistive or lightly inductive loads up to the SSR's rated current (verify the load current against the datasheet's derating curve for ambient temperature).
This mature-line SSR has compliance documentation available from the manufacturer. The order code G3RV-SR700-A AC110 is the full identifier.