... of auto-measuring Voltage between both ends of the module. This module is used together with the Intelligent Fire Alarm Control ... to the Instruction of the electronic encoder. The Interface Module OM513 is used for monitoring the state of the conventional ... , Nanshan District, Shenzhen, 518055, China Tel: 86.755.2678.7499 Fax: 86.755.2678.7499 Conventional Detectors Interface Module (zone module)OM613