Weidmuller Solid State Relays and Optocouplers MICROOPTO Series - Weidmuller 8937980000, The MICROOPTO series of solid state relays and optocouplers are high performance devices that provide specific application oriented solutions. This solid state relay is designed for electronic switching or inverting signals. The input signal is directly switched to the output and inverted so that the device can be used as a pure inverter. Being solid state this relay benefits from wear-free switching and is capable of achieving high switching frequencies. Weidmüller 8937980000 MOS 24VDC / 5-48VDC 0.5A