The SOTU (SCATS™ Outstation Transmission Unit) is an interface device to allow non-SCATS™ compatible controllers to operate under the SCATS™ umbrella. SCATS™ and the user sees the local controller as a normal SCATS™ compatible controller. Two models are available:
- Serial version which communicates with the local controller via a RS232 serial link. All adaptive SCATS™ features are available for up to 24 detectors and 24 groups. Even hardware monitoring (detectors, lamp failures, loads etc) is supported.
- Parallel version which interfaces to the local controller via dedicated wired connections to force stages and to obtain signal green status and detectors. All adaptive SCATS™ features are available for up to 16 detectors and 16 groups. Hardware monitoring of detectors is supported as is some local controller status alarms.
To date SOTU’s have been successfully integrated to ten different local controllers in cities as diverse as Sao Paulo, Brazil and Lodz, Poland.