X-21s™ | Buy Online
X-21s expansion module with four relays can be controlled over the internet with an X-400 or X-600M controller.
X-21s | Four Relay (SPDT) Expansion Module
Relays: 4 Form C / SPDT (Form C)
(125VAC, 28VDC, 2.5A)
9-28 VDC (supplied via the X-400 or X-600M controller, 24V recommended)
Please contact our sales department for quantity discounts.
Expansion Module Accessories
Expansion cables (10-conductor ribbon cable) are necessary to connect expansion modules to an X-400 or X-600M controller. The large expansion modules (X-18s, X-19s, and X-20s) have two expansion ports, and come with a 5-inch expansion cable with two connectors which allows it to connect to the X-400 or X-600M along with other expansion modules.
We recommend to first connect all large expansion modules to the X-400 or X-600M, and then connect any smaller expansion modules (X-11s, X-12s, X-13s, X-15s, X-16s, X-17s, X-21s, X-22s). See Example
To know which expansion cable you need, fill out the form below:
Expansion cable (2 connectors): $10.00
+$5.00 per additional connector
How many expansion modules will be connected to an X-400 or X-600M Controller:
|LARGE expansion modules
(X-18s, X-19s, X-20s)
SMALL expansion modules
(X-11s, X-12s, X-13s, X-15s, X-16s, X-17s, X-21s, X-22s)
You will need the following expansion cable: No additional cable needed
*You cannot have more than 64 expansion modules per X-600M controller or 32 expansion modules per X-400 controller.
**If you have more than 32 expansion modules, a power injector will be required.
Use with an Expansion Cable where a large number of expansion modules are used and additional current capacity is needed