This relay expansion module for CENTAUR systems provides an additional seven relays to the CTV900ATR controller. Up to two plug-and-play relay expansion modules can be added to each controller - for a total of 16 relays per controller. The relay expansion modules are connected to the controller via a RS485 E-bus network, allowing you to install them at a maximum distance of 1220m from the controller. The CAA-460P features an activation status LED for each relay, a communication failure LED with an associated output, a 24-hour anti-tamper input, and supply monitoring.
