ControlByWeb
1-435-750-5999
X-21s Four Relay Form C / SPDT Expansion Module

X-21s expansion module with four relays can be controlled over the internet with an X-400 or X-600M controller.

Where to Buy

Click "Buy Online" to view part numbers and pricing. X-21s is available in the USA and internationally, and can be purchased either from us or an Authorized Distributor.