This is from the manufacturer " Solid State Optronics "
Its a bi-directional, single-pole, single-throw, normally open multipurpose relay.
The circuit is composed of one LED on the input side which activates an optically coupled IC on the output - controlling the firing angle of two back-to-back SCRs. This circuit assures no false triggering under most adverse conditions, and a tight zero-volt window not exceeding 5V.
Features
* Inverse parallel SCR output
* High transient immunity
* 600V blocking voltage
* 1.2A maximum continuous current
* Low input control current
* High input-to-output isolation
* Solid state reliability
* Zero-volt switching
* RoHS Compliant / Pb Free / REACH Compliant
Applications
* Programmable controls
* Valve control
* Solenoids
* Remote switching
* Home appliances
* Metering equipment
* Heating elements
* Gas pump control circuitry