The Kidde Alarmline Analogue LWM-1 Linear Heat Detection System allows early detection of fire or overheating. It is especially suited for confined areas or harsh environments where adverse ambient conditions cause other detection devices to be unreliable or difficult to use. The system consists of the sensor cable and the LWM-1 control unit. The control unit reports temperature differences by the permanent supervision of the resistance of the sensor cable. The response threshold Max-alarm can be adjusted with a 16-step dip-switch. Two test buttons within the control unit allow for an electrical check of the system for alarm and fault. All alarm and fault messages are latched in the control unit. A reset can be generated by an interruption of the power supply or the external-reset input activation.
