COOCA

Hydrometers; Air-fuel ratio controllers for internal combustion engines; Alarm monitoring systems; Alarms for the detection of inflammable gases; Carbon dioxide detectors; Fire and smoke detectors; Flow meters; Flowmeters used in a wide variety of fields; Gas appliance alarm timer for detecting and alerting the presence of gas flow after a prescribed period of time; Leak detecting device for water supplied home appliances consisting of water sensor, control unit with audible alarm and water valves; Oil level sensors