The MHY 737 Indicating Preparation is a special accessory to the MHG 661 Linear Smoke Detector.

It is placed either in a plastic installation case for rendered walls with the protection IP 40 or in the BOPLA case with the protection IP 54. The preparation enables the take out of
information about the functional status of the receiver to a place accessible to the staff. The preparation is linked to the receiver permanent through a cable, and it makes the signalling of the receiver`s alarm status possible. After the removal of the preparation`s covering it enables the disconnection of the detector from the detection line (from the loop), and also the connection of the Addressing Preparation MHY 535, the receiver`s signal measuring and the detector`s mode selection - operation, setup, control. Through the connection to the addressable C.I.E.`s it ensures the address look-out.