The CommandFusion RY4 module features 4 high voltage (250V AC, 5A) relay ports (non-latching, normally open). Comes with detachable screw terminal blocks for secure connections to external relay-controlled devices. Plug the module into a CommandFusion modular controller to add relay control ports to your system. Need more relay ports? Just add another module.
Detachable Terminals for Convenience
The RY4 module uses detachable screw terminal blocks for wire connections. This allows for convenient removal.
As with all CommandFusion products, the communication protocol is open and available to all. Relay modules have simple commands for setting the relay states on, off, toggling and pulsing.
Power On States
Each relay port can be configured to be in ‘open’, ‘closed’ or ‘resume last state’ on power up. As the relays are latching (polarized), they will remain in their open or closed state even when power is lost.
Most relay control systems allow relays to be set on or off, and usually require high level programming on a control processor to perform anything else. CommandFusion relay control protocol includes additional functionality such as a simple toggle command (making it unnecessary to keep track of the relay state for basic toggle actions) and a pulsing command to pulse the relay closed for a time period, then opening again (of course, the time period is customisable as part of the protocol). Relay control has never been this easy!