TOCSIN 640 is a multi-channel detector controller. Easy to install set up and operate with powerful interface features. Control up to 24 detectors via a 4-core cable highway. The enclosed can accommodate bottom or rear conduit entries where cabling is buried into walls etc. The controller has three SPCO relays as standard, which can be extended wit external modules. An RS485 Modbus interface is provided as well as dedicated interlocks for E-stops and fire systems.