The 70S2 series, 70S2-04-B-03-V" , miniature solid-state relay are designed for medium power loads with input voltage range as 3 to 30 VDC. TRIAC AC Zero cross switching device has rated output current SPST- NO , output voltage range 3 A , output voltage range 24 to 140 VAC. Solid-state circuitry involves no moving parts and increases stability and reliability. Optically coupled circuit provides isolation between input and output circuits. Internal snubber helps protect the relay.s internal circuit from high voltage transients. Printed circuit board mounting mode with screw terminals provides high level of flexibility. Small package size is ideal for small spaces.